Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A. AGR values in severe vs non-severe COVID-19 patients. B. Subgroup analysis according to country of origin between severe vs nonsevere COVID-19 patients. C. Sensitivity analysis according to the risk of bias between severe vs nonsevere COVID-19 patients.
