Contribution to authorship
KW and JT were responsible for initial study design. KO, JT and KW collated reports of COVID-19 in pregnancy using methodology as per Walker et al. [15]. WL advised on overlap of cases from China. JS collected data from these sources and from cases contributed by BM, SM, KM, and MO to draft the paper alongside KW. All authors were responsible for re-drafting and editing the manuscript and approved the final version