The international Perinatal Outcomes in the Pandemic (iPOP) study: protocol [version 1; peer review: 2 approved] oleh Sarah J. Stock, Helga Zoega, Meredith Brockway, Rachel H. Mulholland, Jessica E. Miller, Jasper V. Been, Rachael Wood, Ishaya I. Abok, Belal Alshaikh, Adejumoke I. Ayede, Fabiana Bacchini, Zulfiqar A. Bhutta, Bronwyn K. Brew, Jeffrey Brook, Clara Calvert, Marsha Campbell-Yeo, Deborah Chan, James Chirombo, Kristin L. Connor, Mandy Daly, Kristjana Einarsdóttir, Ilaria Fantasia, Meredith Franklin, Abigail Fraser, Siri Eldevik Håberg, Lisa Hui, Luis Huicho, Maria C. Magnus, Andrew D. Morris, Livia Nagy-Bonnard, Natasha Nassar, Sylvester Dodzi Nyadanu, Dedeke Iyabode Olabisi, Kirsten R. Palmer, Lars Henning Pedersen, Gavin Pereira, Amy Racine-Poon, Manon Ranger, Tonia Rihs, Christoph Saner, Aziz Sheikh, Emma M. Swift, Lloyd Tooke, Marcelo L. Urquia, Clare Whitehead, Christopher Yilgwan, Natalie Rodriguez, David Burgner, Meghan B. Azad, iPOP Study Team