BNT162b2 Vaccine Booster and Mortality Due to Covid-19.
N Engl J Med. 2021 Dec 23;385(26):2413-2420. doi: 10.1056/NEJMoa2115624. Epub 2021 Dec 8.
N Engl J Med. 2021.
PMID: 34879190
Free PMC article.