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) Subgroup analysis of Hb level according to duration of treatment. (B) Subgroup analysis of Hb level according to dosage of elemental iron.
