A Cluster-Randomized Trial of Hydroxychloroquine for Prevention of Covid-19.
N Engl J Med. 2021 Feb 4;384(5):417-427. doi: 10.1056/NEJMoa2021801. Epub 2020 Nov 24.
N Engl J Med. 2021.
PMID: 33289973
Free PMC article.
Clinical Trial.