1. From the Department of Social and Preventive Medicine, University at Buffalo, State University of New York, Buffalo, NY (JLF); the Departments of Biostatistics (JR), Nutrition (SAS-W, ER, WCW, and DJH), and Epidemiology (SAS-W, GC, ER, WCW, and DJH), Harvard School of Public Health, Boston, MA; the Cancer Prevention Studies Branch, Division of Clinical Sciences, National Cancer Institute, Bethesd