1. From the Nutritional Epidemiology Group (JEC, JAM, BO, and VJB) and the Biostatistics Group (DCG), Centre for Epidemiology and Biostatistics, University of Leeds, Leeds, United Kingdom; the Genetic Epidemiology Division, Cancer Research UK Clinical Centre, St James’s University Hospital, Leeds, United Kingdom (JM, KK, and DTB); and the University of Wales College of Medicine, Cardiff, United King