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.
Cumulative transfusion-free survival in the initial cohort of 100 transfused patients. The survival was estimated censoring patients at first RBC transfusion event, expressed according to postnatal day (A) or postmenstrual weeks (B). The distribution of RBC unit needs is also displayed (inset in A). RBC, red blood cell.
