Full text
PDFPage 2144
. 1985 Aug;4(8):2144. doi: 10.1002/j.1460-2075.1985.tb03905.x
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.