1. From the Department of Medicine, Vanderbilt Epidemiology Center and Vanderbilt Ingram–Cancer Center, Vanderbilt University Medical Center, Nashville, TN (RV, GY, WZ, and XOS); the Department of Epidemiology, Shanghai Cancer Institute, Shanghai, Peoples Republic of China (Y-TG and H-LL); the Department of Medicine, Vanderbilt Diabetes Research and Training Center, Vanderbilt University Medical Cen