1. Pregnancy and infection;Kourtis;N Engl J Med,2014
2. Clinical manifestations, risk factors, and maternal and perinatal outcomes of coronavirus disease 2019 in pregnancy: living systematic review and meta-analysis;Allotey;BMJ,2020
3. Canadian Surveillance of COVID-19 in pregnancy: epidemiology, maternal and infant outcomes. Report #2;Money,2021
4. Update: characteristics of symptomatic women of reproductive age with laboratory-confirmed SARS-CoV-2 infection by pregnancy status - United States, January 22–October 3,2020;Zambrano;MMWR Morb Mortal Wkly Rep,2020
5. Females in hospital with SARS-CoV-2 infection, the association with pregnancy and pregnancy outcomes: a UKOSS/ISARIC/CO-CIN investigation;Knight,2020