主题词：Pregnancy and preeclampsia studies; Maternal and fetal healthcare; Gestational Diabetes Research and Management; Maternal and Perinatal Health Interventions; Prenatal Screening and Diagnostics; Assisted Reproductive Technology and Twin Pregnancy; Birth, Development, and Health; Preterm Birth and Chorioamnionitis; Ectopic Pregnancy Diagnosis and Management; COVID-19 Impact on Reproduction; Cardiovascular Issues in Pregnancy; Reproductive System and Pregnancy; Neonatal Respiratory Health Research; Global Maternal and Child Health; Pregnancy-related medical research; Neonatal and fetal brain pathology; Fetal and Pediatric Neurological Disorders; Pregnancy and Medication Impact; Congenital Anomalies and Fetal Surgery; Blood groups and transfusion; Cancer Risks and Factors; Maternal Mental Health During Pregnancy and Postpartum; Blood Coagulation and Thrombosis Mechanisms; Neonatal and Maternal Infections; Parvovirus B19 Infection Studies