1. From the Medical Research Council Epidemiology Unit, Cambridge, United Kingdom (PSP, SJS, NJW, and NGF); the Laboratory for Toxicology, Pathology, and Genetics, National Institute for Public Health and the Environment, Bilthoven, Netherlands (EJ); the Division of Human Nutrition, Wageningen University. Wageningen, Netherlands (EJ); and the Department of Public Health and Primary Care, University