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International Journal of Gynaecology... Aug 2021To evaluate the association between obstetric and medical risk factors and stillbirths in a Kenyan set-up.
OBJECTIVE
To evaluate the association between obstetric and medical risk factors and stillbirths in a Kenyan set-up.
METHODS
A case-control study was conducted in four hospitals between August 2018 and April 2019. Two hundred and fourteen women with stillbirths and 428 with live births at more than >28 weeks of gestation were enrolled. Data collection was via interviews and abstraction from medical records. Outcome variables were stillbirth and live birth; exposure variables were sociodemographic characteristics, and medical and obstetric factors. The two-sample t test and χ test were used to compare continuous and categorical variables respectively. The association between the exposure and outcome variable was done using logistic regression. A P value less than 0.05 was considered statistically significant.
RESULTS
Stillbirth was associated with pre-eclampsia without severe features (odds ratio [OR] 9.1, 95% confidence interval [CI] 2.6-32.5), pre-eclampsia with severe features (OR 7.4, 95% CI 2.4-22.8); eclampsia (OR 9.2, 95% CI 2.6-32.5), placenta previa (OR 8.6 95% CI 2.8-25.9), placental abruption (OR 6.9 95% CI 2.2-21.3), preterm delivery(OR 9.5, 95% CI 5.7-16), and gestational diabetes mellitus, (OR 11.5, 95% CI 2.5-52.6). Stillbirth was not associated with multiparity, anemia, and HIV.
CONCLUSION
Proper antepartum care and surveillance to identify and manage medical and obstetric conditions with the potential to cause stillbirth are recommended.
Topics: Adult; Case-Control Studies; Diabetes, Gestational; Female; Humans; Infant, Newborn; Kenya; Obstetric Labor Complications; Parity; Placenta; Poverty; Pre-Eclampsia; Pregnancy; Pregnancy Complications; Premature Birth; Prenatal Care; Risk Factors; Stillbirth; Young Adult
PubMed: 33306840
DOI: 10.1002/ijgo.13528 -
Journal of Perinatal Medicine Jul 2022This study aimed to assess parents' satisfaction with received care and support when experiencing stillbirth.
OBJECTIVES
This study aimed to assess parents' satisfaction with received care and support when experiencing stillbirth.
METHODS
This was a questionnaire survey conducted at Helsinki University Hospital, Helsinki, Finland during 2016-2020. Separate questionnaires were sent to mothers and partners who had experienced an antepartum singleton stillbirth at or after 22 gestational weeks during 2016-2019. The questionnaire covered five major topics: stillbirth diagnosis, delivery, information on postmortem examinations, aftercare at the ward, and follow-up appointment.
RESULTS
One hundred nineteen letters were sent and 57 (47.9%) of the mothers and 46 (38.7%) of their partners responded. Both mothers and their partners felt well supported during delivery. They were also satisfied with the time holding their newborn. Partners reported even higher satisfaction in this aspect with a significant within-dyad difference (p=0.049). Parents were generally pleased with the support at the ward. However, both groups were less satisfied with social worker counseling (mothers 53.7%, partners 61.0%). The majority felt that the follow-up visit was helpful. Nonetheless, a remarkable proportion felt that the follow-up visit increased their anxiousness (25.9%, 14.0%, p=0.018). Partners rated their mood higher than mothers (p=0.001). Open feedback revealed that the support received after discharge from hospital was often insufficient.
CONCLUSIONS
Our study showed that the parents who experience stillbirth in our institution receive mostly adequate care and support during their hospital stay. However, there is room for further training of healthcare professionals and other professionals contributing in stillbirth aftercare.
Topics: Aftercare; Female; Humans; Infant, Newborn; Mothers; Parents; Pregnancy; Stillbirth; Surveys and Questionnaires
PubMed: 35700452
DOI: 10.1515/jpm-2022-0246 -
The Journal of Maternal-fetal &... Sep 2020To examine the potential value of fetal ultrasound and maternal characteristics in the prediction of antepartum stillbirth after 32 weeks' gestation. This was a...
To examine the potential value of fetal ultrasound and maternal characteristics in the prediction of antepartum stillbirth after 32 weeks' gestation. This was a retrospective multicenter study in Spain. In 29 pregnancies, umbilical artery pulsatility index (UA PI), middle cerebral artery pulsatility index (MCA PI), cerebroplacental ratio (CPR), estimated fetal weight (EFW), and maternal characteristics were recorded within 15 days prior to a stillbirth. The values of UA PI, MCA PI, and CPR were converted into multiples of the normal median (MoM) for gestational age and the EFW was expressed as percentile according to a Spanish reference range for gestational age. Data from the 29 pregnancies with stillbirths and 2298 control pregnancies resulting in livebirths were compared and multivariate logistic regression analysis was used to determine significant predictors of stillbirth. The only significant predictor of stillbirth was CPR (OR = 0.161, 95% confidence interval [CI] 0.035, 0.654; = .014); the area under the receiver operating characteristics curve was 0.663 (95% CI 0.545, 0.782) and the detection rate (DR) was 32.14% at a 10% false-positive rate (FPR). In addition, when we included MCA and UA PI MoM instead of CPR, only MCA PI MoM was significant (OR = 0.104, 95% confidence interval [CI] 0.013, 0.735; = .029), with similar prediction abilities (area under the curve (AUC) 0.645, DR 28.6%, FPR 10%). The CPR and MCA PI are predictors of late stillbirth but the performance of prediction is poor.
Topics: Female; Gestational Age; Humans; Middle Cerebral Artery; Pregnancy; Pulsatile Flow; Retrospective Studies; Spain; Stillbirth; Ultrasonography, Prenatal; Umbilical Arteries
PubMed: 30672365
DOI: 10.1080/14767058.2019.1566900 -
American Journal of Perinatology Jan 2022We sought to quantify the distribution of stillbirths by gestational age (GA) in a contemporary cohort and to determine identifiable risk factors associated with...
OBJECTIVE
We sought to quantify the distribution of stillbirths by gestational age (GA) in a contemporary cohort and to determine identifiable risk factors associated with stillbirth prior to 32 weeks of gestation.
STUDY DESIGN
Population-based case-control study of all stillbirths in the United States during the year 2014, utilizing vital statistics data, obtained from the National Center for Health Statistics. Distribution of stillbirths were stratified by 20 to 44 weeks of GA, in women diagnosed with stillbirth in the antepartum period. Pregnancy characteristics were compared between those diagnosed with stillbirth <32 versus ≥32 weeks of gestation. Multivariate logistic regression estimated the relative influence of various factors on the outcome of stillbirth prior to 32 weeks of gestation.
RESULTS
There were 15,998 nonlaboring women diagnosed with stillbirth during 2014 in the United States between 20 and 44 weeks. Of them, 60.1% ( = 9,618) occurred before antenatal fetal surveillance (ANFS) is typically initiated (<32 weeks) and 39.9% ( = 6,380) were diagnosed at ≥32 weeks. Women with stillbirth prior to 32 weeks were more likely to be of non-Hispanic Black race (29.0 vs. 23.9%, < 0.001), nulliparous (53.8 vs. 50.6%, = 0.001), have chronic hypertension (CHTN; 6.0 vs. 4.3%, < 0.001), and fetal growth restriction as evidenced by small for GA (SGA < 10th%) birth weight (44.8 vs. 42.1%, < 0.001) as opposed to women with stillbirth after 32 weeks. After adjustment, SGA birth weight (adjusted odds ratio [aOR] = 1.2, 95% confidence interval [CI]: 1.1-1.3), Black race (aOR = 1.2, 95% CI: 1.1-1.3), and CHTN (aOR = 1.3, 95% CI: 1.1-1.5) were associated with stillbirth prior to 32 weeks of gestation as opposed to stillbirth after 32 weeks.
CONCLUSION
More than 6 out of 10 stillbirths in this study occurred <32 weeks of gestation, before ANFS is typically initiated under American College of Obstetricians and Gynecologists recommendations. Among identifiable risk factors, CHTN, Black race, and fetal growth restriction were associated with higher risk of stillbirth before 32 weeks of gestation. Earlier ANFS may be warranted at in certain "at risk" women.
KEY POINTS
· Six out of 10 stillbirths occur before 32 weeks of gestation.. · We evaluated factors associated with stillbirth <32 weeks.. · Hypertension and fetal growth restriction were associated with early stillbirth..
Topics: Black or African American; Case-Control Studies; Chronic Disease; Female; Fetal Growth Retardation; Gestational Age; Humans; Hypertension; Hypertension, Pregnancy-Induced; Infant, Small for Gestational Age; Logistic Models; Pregnancy; Pregnancy in Diabetics; Risk Factors; Stillbirth; United States
PubMed: 32736406
DOI: 10.1055/s-0040-1714421 -
Clinical Infectious Diseases : An... Jun 2024We evaluated associations between antepartum weight change and adverse pregnancy outcomes and between antiretroviral therapy (ART) regimens and week 50 postpartum body... (Randomized Controlled Trial)
Randomized Controlled Trial
Weight Changes and Adverse Pregnancy Outcomes With Dolutegravir- and Tenofovir Alafenamide Fumarate-Containing Antiretroviral Treatment Regimens During Pregnancy and Postpartum.
BACKGROUND
We evaluated associations between antepartum weight change and adverse pregnancy outcomes and between antiretroviral therapy (ART) regimens and week 50 postpartum body mass index in IMPAACT 2010.
METHODS
Women with human immunodeficiency virus (HIV)-1 in 9 countries were randomized 1:1:1 at 14-28 weeks' gestational age (GA) to start dolutegravir (DTG) + emtricitabine (FTC)/tenofovir alafenamide fumarate (TAF) versus DTG + FTC/tenofovir disoproxil fumarate (TDF) versus efavirenz (EFV)/FTC/TDF. Insufficient antepartum weight gain was defined using Institute of Medicine guidelines. Cox-proportional hazards regression models were used to evaluate the association between antepartum weight change and adverse pregnancy outcomes: stillbirth (≥20 weeks' GA), preterm delivery (<37 weeks' GA), small size for GA (<10th percentile), and a composite of these endpoints.
RESULTS
A total of 643 participants were randomized: 217 to the DTG + FTC/TAF, 215 to the DTG + FTC/TDF, and 211 to the EFV/FTC/TDF arm. Baseline medians were as follows: GA, 21.9 weeks; HIV RNA, 903 copies/mL; and CD4 cell count, 466/μL. Insufficient weight gain was least frequent with DTG + FTC/TAF (15.0%) versus DTG + FTC/TDF (23.6%) and EFV/FTC/TDF (30.4%). Women in the DTG + FTC/TAF arm had the lowest rate of composite adverse pregnancy outcome. Low antepartum weight gain was associated with higher hazard of composite adverse pregnancy outcome (hazard ratio, 1.44 [95% confidence interval, 1.04-2.00]) and small size for GA (1.48 [.99-2.22]). More women in the DTG + FTC/TAF arm had a body mass index ≥25 (calculated as weight in kilograms divided by height in meters squared) at 50 weeks postpartum (54.7%) versus the DTG + FTC/TDF (45.2%) and EFV/FTC/TDF (34.2%) arms.
CONCLUSIONS
Antepartum weight gain on DTG regimens was protective against adverse pregnancy outcomes typically associated with insufficient weight gain, supportive of guidelines recommending DTG-based ART for women starting ART during pregnancy. Interventions to mitigate postpartum weight gain are needed.
Topics: Humans; Female; Pregnancy; HIV Infections; Tenofovir; Heterocyclic Compounds, 3-Ring; Adult; Oxazines; Pyridones; Piperazines; Pregnancy Outcome; Pregnancy Complications, Infectious; Postpartum Period; Anti-HIV Agents; Alanine; Weight Gain; Adenine; HIV-1; Young Adult
PubMed: 38180851
DOI: 10.1093/cid/ciae001 -
International Journal of Infectious... Feb 2024Chikungunya virus (CHIKV), a reemerging global public health concern, which causes acute febrile illness, rash, and arthralgia and may affect both mothers and infants...
OBJECTIVES
Chikungunya virus (CHIKV), a reemerging global public health concern, which causes acute febrile illness, rash, and arthralgia and may affect both mothers and infants during pregnancy. Mother-to-child transmission (MTCT) of CHIKV in Africa remains understudied.
METHODS
Our cohort study screened 1006 pregnant women with a Zika/dengue/CHIKV rapid test at two clinics in Nigeria between 2019 and 2022. Women who tested positive for the rapid test were followed through their pregnancy and their infants were observed for 6 months, with a subset tested by reverse transcription-polymerase chain reaction (RT-PCR) and neutralization, to investigate seropositivity rates and MTCT of CHIKV.
RESULTS
Of the 1006, 119 tested positive for CHIKV immunoglobulin (Ig)M, of which 36 underwent detailed laboratory tests. While none of the IgM reactive samples were RT-PCR positive, 14 symptomatic pregnant women were confirmed by CHIKV neutralization test. Twelve babies were followed with eight normal and four abnormal outcomes, including stillbirth, cleft lip/palate with microcephaly, preterm delivery, polydactyly with sepsis, and jaundice. CHIKV IgM testing identified three possible antepartum transmissions.
CONCLUSION
In Nigeria, we found significant CHIKV infection in pregnancy and possible CHIKV antepartum transmission associated with birth abnormalities.
Topics: Infant; Infant, Newborn; Humans; Female; Pregnancy; Chikungunya virus; Pregnant Women; Cohort Studies; Nigeria; Cleft Lip; Infectious Disease Transmission, Vertical; Cleft Palate; Chikungunya Fever; Zika Virus Infection; Zika Virus; Stillbirth; Immunoglobulin M; Dengue
PubMed: 38056689
DOI: 10.1016/j.ijid.2023.11.036 -
Frontiers in Pediatrics 2022Stillbirth, which accounts for half of all the perinatal mortality, is not counted on policy, program, and investment agendas around the globe. It has been...
BACKGROUND
Stillbirth, which accounts for half of all the perinatal mortality, is not counted on policy, program, and investment agendas around the globe. It has been underestimated public health burden, particularly in developing countries. Ethiopia is among the top countries with a large prevalence of stillbirth in the world. However, there is a dearth of study on the current magnitude of stillbirth in the study area. Therefore, this study intended to assess the prevalence of stillbirth and its associated factors to bridge the gap.
METHODS
A hospital-based retrospective study was conducted from 1 to 28 February 2019 and data were collected by reviewing the chart records of all the women who gave birth in the past 2 years (January 2016 to December 2018) at Hiwot Fana Specialized University Hospital. Data were entered into EpiData version 4.2.0.0 software and transported to SPSS version 23 for analysis. Descriptive statistics such as frequency, mean, and SDs were generated. Determinants of stillbirth were analyzed using a binary logistic regression and presented by adjusted odds ratio (AOR) with a 95% CI.
RESULTS
The prevalence of stillbirth was 14.5% (95% CI: 11.7%, 17.6%). Low birth weight (AOR = 2.42, 95% CI: 1.23-4.76), prematurity (AOR = 2.10, 95% CI: 1.10-4.01), premature rupture of membranes (AOR = 2.08, 95% CI: 1.14-3.77), antepartum hemorrhage (AOR = 3.33, 95% CI: 1.66-6.67), obstructed labor (AOR = 2.87, 95% CI: 1.48-5.56), and preeclampsia (AOR = 2.91, 95% CI: 1.28-6.62) were an independently associated with stillbirth.
CONCLUSION
The prevalence of stillbirth in this study was high. Low birth weight, preterm birth, premature rupture of membranes, antepartum hemorrhage, obstructed labor, and preeclampsia were independently associated with a stillbirth. Therefore, much study is needed involving different stakeholders to reduce stillbirths by improving the health status of women through the provision of quality maternal care including referral systems.
PubMed: 35633972
DOI: 10.3389/fped.2022.820308 -
PLoS Medicine Mar 2020Migrant women, especially from Indian and African ethnicity, have a higher risk of stillbirth than native-born populations in high-income countries. Differential access... (Comparative Study)
Comparative Study
BACKGROUND
Migrant women, especially from Indian and African ethnicity, have a higher risk of stillbirth than native-born populations in high-income countries. Differential access or timing of ANC and the uptake of other services may play a role. We investigated the pattern of healthcare utilisation among migrant women and its relationship with the risk of stillbirth (SB)-antepartum stillbirth (AnteSB) and intrapartum stillbirth (IntraSB)-in Western Australia (WA).
METHODS AND FINDINGS
A retrospective cohort study using de-identified linked data from perinatal, birth, death, hospital, and birth defects registrations through the WA Data Linkage System was undertaken. All (N = 260,997) non-Indigenous births (2005-2013) were included. Logistic regression analysis was used to estimate odds ratios and 95% CI for AnteSB and IntraSB comparing migrant women from white, Asian, Indian, African, Māori, and 'other' ethnicities with Australian-born women controlling for risk factors and potential healthcare-related covariates. Of all the births, 66.1% were to Australian-born and 33.9% to migrant women. The mean age (years) was 29.5 among the Australian-born and 30.5 among the migrant mothers. For parity, 42.3% of Australian-born women, 58.2% of Indian women, and 29.3% of African women were nulliparous. Only 5.3% of Māori and 9.2% of African migrants had private health insurance in contrast to 43.1% of Australian-born women. Among Australian-born women, 14% had smoked in pregnancy whereas only 0.7% and 1.9% of migrants from Indian and African backgrounds, respectively, had smoked in pregnancy. The odds of AnteSB was elevated in African (odds ratio [OR] 2.22, 95% CI 1.48-2.13, P < 0.001), Indian (OR 1.64, 95% CI 1.13-2.44, P = 0.013), and other women (OR 1.46, 95% CI 1.07-1.97, P = 0.016) whereas IntraSB was higher in African (OR 5.24, 95% CI 3.22-8.54, P < 0.001) and 'other' women (OR 2.18, 95% CI 1.35-3.54, P = 0.002) compared with Australian-born women. When migrants were stratified by timing of first antenatal visit, the odds of AnteSB was exclusively increased in those who commenced ANC later than 14 weeks gestation in women from Indian (OR 2.16, 95% CI 1.18-3.95, P = 0.013), Māori (OR 3.03, 95% CI 1.43-6.45, P = 0.004), and 'other' (OR 2.19, 95% CI 1.34-3.58, P = 0.002) ethnicities. With midwife-only intrapartum care, the odds of IntraSB for viable births in African and 'other' migrants (combined) were more than 3 times that of Australian-born women (OR 3.43, 95% CI 1.28-9.19, P = 0.014); however, with multidisciplinary intrapartum care, the odds were similar to that of Australian-born group (OR 1.34, 95% CI 0.30-5.98, P = 0.695). Compared with Australian-born women, migrant women who utilised interpreter services had a lower risk of SB (OR 0.51, 95% CI 0.27-0.96, P = 0.035); those who did not utilise interpreters had a higher risk of SB (OR 1.20, 95% CI 1.07-1.35, P < 0.001). Covariates partially available in the data set comprised the main limitation of the study.
CONCLUSION
Late commencement of ANC, underutilisation of interpreter services, and midwife-only intrapartum care are associated with increased risk of SB in migrant women. Education to improve early engagement with ANC, better uptake of interpreter services, and the provision of multidisciplinary-team intrapartum care to women specifically from African and 'other' backgrounds may reduce the risk of SB in migrants.
Topics: Adult; Asian People; Black People; Emigrants and Immigrants; Emigration and Immigration; Health Knowledge, Attitudes, Practice; Health Resources; Healthcare Disparities; Humans; Maternal Health Services; Middle Aged; Native Hawaiian or Other Pacific Islander; Patient Acceptance of Health Care; Patient Education as Topic; Race Factors; Retrospective Studies; Risk Assessment; Risk Factors; Stillbirth; Western Australia; Young Adult
PubMed: 32182239
DOI: 10.1371/journal.pmed.1003061 -
PLOS Global Public Health 2023Antepartum stillbirth is a public health problem in a low-income country like Ethiopia. Quality antenatal care (ANC) is supposed to reduce the risk of many bad outcomes....
BACKGROUND
Antepartum stillbirth is a public health problem in a low-income country like Ethiopia. Quality antenatal care (ANC) is supposed to reduce the risk of many bad outcomes. Thus the main objective of this study was to identify the effect of quality antenatal care on antepartum stillbirth in Public health facilities of Hossana town Hadiya zone south Ethiopia.
METHOD
About 1123 mothers with a gestational age of less than 16 weeks were identified and followed using an observational longitudinal study to determine whether the quality of ANC influences antepartum stillbirth or not. Standardized and pretested observation checklists and participants' interview questionnaires were employed to obtain the necessary information after getting both written and verbal consent from the concerned bodies and study participants. In this study, quality was measured by the process attributes of quality to measure the acceptable standard of quality of antenatal care. Women who received ≥75% of essential ANC services (from 1st-4th visit) were categorized under received good quality antenatal care. General estimating equation analysis was done to determine the effect of quality antenatal care on antepartum stillbirth.
RESULT
A total of 121 (12.3%) 95% CI (10.3%, 14.5%) mothers who were observed during delivery had encountered antepartum stillbirth. In this study, the overall quality of antenatal care service that was provided in the whole visit (1st -4th) was 1230 (31.38%). Higher quality ANC decreases the odds of antepartum stillbirth by almost 81%, after controlling other factors (0.19 (AOR 0.19 at 95% CI; 0.088 to 0.435). There is a change in the odds of developing antepartum stillbirth as the level of education of mothers increases. Moreover, mothers with a history of preexisting hypertension were more like to have antepartum stillbirth AOR = 3.1, 95%CI (1.44, 6.77)].
CONCLUSION AND RECOMMENDATION
Therefore, having a good quality of ANC significantly reduces antepartum stillbirth. Strategies need to be developed on the problems identified to improve the quality of ANC and reduce antepartum stillbirth significantly.
PubMed: 36963030
DOI: 10.1371/journal.pgph.0001468 -
JAMA Network Open Sep 2021Rates of maternal sepsis are increasing, and prior studies of maternal sepsis have focused on immediate maternal morbidity and mortality associated with sepsis during...
IMPORTANCE
Rates of maternal sepsis are increasing, and prior studies of maternal sepsis have focused on immediate maternal morbidity and mortality associated with sepsis during delivery admission. There are no data on pregnancy outcomes among individuals who recover from their infections prior to delivery.
OBJECTIVE
To describe perinatal outcomes among patients with antepartum sepsis who did not deliver during their infection hospitalization.
DESIGN, SETTING, AND PARTICIPANTS
This retrospective cohort study was conducted using data from August 1, 2012, to August 1, 2018, at an academic referral center in San Francisco, California. Included patients were all individuals with nonanomalous, singleton pregnancies who delivered after 20 weeks' gestation during the study period. Data were analyzed from March 2020 through March 2021.
EXPOSURES
Antepartum admission for infection with clinical concern for sepsis and hospital discharge prior to delivery.
MAIN OUTCOMES AND MEASURES
The primary outcome was a composite of perinatal outcomes associated with placental dysfunction and consisted of 1 or more of the following: fetal growth restriction, oligohydramnios, hypertensive disease of pregnancy, cesarean delivery for fetal indication, child who is small for gestational age, or stillbirth.
RESULTS
Among 14 565 patients with nonanomalous singleton pregnancies (mean [SD] age at delivery, 33.1 [5.2] years), 59 individuals (0.4%) were in the sepsis group and 14 506 individuals (99.6%) were in the nonsepsis group; 8533 individuals (59.0%) were nulliparous. Patients with sepsis, compared with patients in the reference group, were younger (mean [SD] age at delivery, 30.6 [5.7] years vs 33.1 [5.2] years; P < .001), were more likely to have pregestational diabetes (5 individuals [8.5%] vs 233 individuals [1.6%]; P = .003), and had higher mean (SD) pregestational body mass index scores (26.1 [6.1] vs 24.4 [5.9]; P = .03). In the sepsis group, the most common infections were urinary tract infections (24 patients [40.7%]) and pulmonary infections (22 patients [37.3%]). Among patients with sepsis, 5 individuals (8.5%) were admitted to the intensive care unit, the mean (SD) gestational age at infection was 24.6 (9.0) weeks, and the median (interquartile range) time from infection to delivery was 82 (42-147) days. Antepartum sepsis was associated with higher odds of placental dysfunction (21 patients [35.6%] vs 3450 patients [23.8%]; odds ratio, 1.77; 95% CI, 1.04-3.02; P = .04). On multivariable logistic regression analysis, antepartum sepsis was an independent factor associated with placental dysfunction (adjusted odds ratio, 1.88; 95% CI, 1.10-3.23; P = .02) after adjusting for possible confounders.
CONCLUSIONS AND RELEVANCE
This study found that pregnancies complicated by antepartum sepsis were associated with higher odds of placental dysfunction. These findings suggest that increased antenatal surveillance should be considered for these patients.
Topics: Adult; California; Female; Humans; Infant, Newborn; Male; Pregnancy; Pregnancy Complications, Infectious; Pregnancy Outcome; Prenatal Care; Stillbirth
PubMed: 34477848
DOI: 10.1001/jamanetworkopen.2021.24109