Butler Terry L, Fraser Gary E, Beeson W Lawrence, Knutsen Synnøve F, Herring R Patti, Chan Jacqueline, Sabaté Joan, Montgomery Susanne, Haddad Ella, Preston-Martin Susan, Bennett Hannelore, Jaceldo-Siegl Karen
School of Public Health, Loma Linda University, Loma Linda, California 9235, USA.
Int J Epidemiol. 2008 Apr;37(2):260-5. doi: 10.1093/ije/dym165. Epub 2007 Aug 27.