Maternal and perinatal outcomes of pandemic COVID-19 in pregnancy

2020 Results article in https://doi.org/10.1136/bmj.m2107 results (added 10/06/2020) 2021 Preprint results in https://doi.org/10.1101/2021.07.22.21261000 Impact of SARS-CoV-2 variant (added 31/08/2021) 2022 Interim results article in http://dx.doi.org/10.1136/bmjmed-2021-000053 comparison between outcomes collected in the periods in which wildtype, alpha variant, and delta variant of SARS-CoV-2 were dominant in the UK (added 09/03/2022) 2021 Interim results article in https://pubmed.ncbi.nlm.nih.gov/33951100/ population level data on risk factors, incidence and impact of SARS-CoV-2 infection in pregnant women (added 09/03/2022) 2022 Interim results article in https://pubmed.ncbi.nlm.nih.gov/35213734/ secondary analysis of data (added 09/03/2022) 2022 Results article in https://pubmed.ncbi.nlm.nih.gov/36936599/ (added 21/03/2023) 2024 Results article in https://doi.org/10.1038/s41467-024-47181-z (added 10/05/2024)