Full text
PDF
letter . 1903 Sep;38(3):478–480. doi: 10.1097/00000658-190309000-00020
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.