Interim Results of a Phase 1-2a Trial of Ad26.COV2.S Covid-19 Vaccine.
N Engl J Med. 2021 May 13;384(19):1824-1835. doi: 10.1056/NEJMoa2034201. Epub 2021 Jan 13.
N Engl J Med. 2021.
PMID: 33440088
Free PMC article.
Clinical Trial.