6.2. Analysis.
Comparison 6: Cardiovascular (no bypass) (subgroup: timing), Outcome 2: Volume of transfusion (units) (PPR)
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.