Fig. 1. Number of included children per age and sex (A: boys, B: girls) from two hospitals. PNUYH, Pusan National University Yangsan Hospital.
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.