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.
Age of presentation of conventional (A) Mendelian disorders and (B) common complex traits causing limitation of activity among working-age adults, 1999–2001. Data for panel A are from Jimenez-Sanchez et al. (2001), and data for panel B are from the U.S. National Center for Health Statistics (Statistics 2003). (Reprinted, with permission, from Bjornsson et al. 2004 [©Elsevier].)
