Difference in mortality among individuals admitted to hospital with COVID-19 during the first and second waves in South Africa: a cohort study.
Lancet Glob Health. 2021 Sep;9(9):e1216-e1225. doi: 10.1016/S2214-109X(21)00289-8. Epub 2021 Jul 9.
Lancet Glob Health. 2021.
PMID: 34252381
Free PMC article.