1. From the Cancer Epidemiology Unit, University of Oxford, Oxford, United Kingdom (NEA, PNA, AWR, and TJK); the Institute of Cancer Epidemiology, Danish Cancer Society, Copenhagen, Denmark (ATj and NFJ); the Department of Clinical Epidemiology, Aarhus University Hospital, Aalborg, Denmark (KO); the Department of Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany