Characteristics, Outcomes, and Trends of Patients With COVID-19-Related Critical Illness at a Learning Health System in the United States.
Ann Intern Med. 2021 May;174(5):613-621. doi: 10.7326/M20-5327. Epub 2021 Jan 19.
Ann Intern Med. 2021.
PMID: 33460330
Free PMC article.