SARS-CoV-2(5) coronavirus(4) COVID-19(3) Coronavirus disease 2019(2) complications(2) serologic testing(2) Obstetric(2) uterine artery(2) multicenter study(2) positive(2) outcome(2) evaluated(2) Pregnancy(2) Complication(2) multicenter(2) blood count(2) not increased(2) increased risk(2) inflammatory markers(2) Doppler(2) lymphopenia(2) symptomatic(2) delivery(2) Inflammatory marker(2) first trimester(2) tyrosine(2) severe acute respiratory syndrome coronavirus 2(2) acute respiratory syndrome coronavirus(2) SARS-COV-2 infection(2) second(2)