Effects of the COVID-19 pandemic on maternal and perinatal outcomes: a systematic review and meta-analysis.
Lancet Glob Health. 2021 Jun;9(6):e759-e772. doi: 10.1016/S2214-109X(21)00079-6. Epub 2021 Mar 31.
Lancet Glob Health. 2021.
PMID: 33811827
Free PMC article.