COVID-19(60) Pregnancy(50) Patient(30) SARS-CoV-2(28) Infection(28) coronavirus(25) fetal(21) pregnant women(19) SARS-COV-2 infection(19) outcome(19) pregnant(19) women(18) risk(17) pandemic(16) COVID-19 pandemic(16) 95% confidence interval(15) Transmission(15) outcomes(14) placental(14) Placenta(14) Cohort(13) Admission(12) pregnant patient(12) Symptom(12) Stillbirth(12) individual(11) Coronavirus disease 2019(11) reported(11) syndrome(10) evaluated(10)