Crimmins Eileen M, Finch Caleb E
Andrus Gerontology Center, and USC College, Department of Biological Sciences and Sociology, University of Southern California, Los Angeles, CA 90089-0191, USA.
Int J Epidemiol. 2006 Oct;35(5):1270-1. doi: 10.1093/ije/dyl194. Epub 2006 Sep 15.