Convalescent Plasma Antibody Levels and the Risk of Death from Covid-19.
N Engl J Med. 2021 Mar 18;384(11):1015-1027. doi: 10.1056/NEJMoa2031893. Epub 2021 Jan 13.
N Engl J Med. 2021.
PMID: 33523609
Free PMC article.