Asymptomatic SARS-CoV-2 infection: A systematic review and meta-analysis.
Proc Natl Acad Sci U S A. 2021 Aug 24;118(34):e2109229118. doi: 10.1073/pnas.2109229118.
Proc Natl Acad Sci U S A. 2021.
PMID: 34376550
Free PMC article.