1. From the Nutritional Sciences Division, Faculty of Health and Medical Sciences, University of Surrey, Guildford United Kingdom (MPR, AJT, BB, JC, RG, and MW-P); Clinical Trials & Statistics Unit, Section of Clinical Trials, Institute of Cancer Research, Sutton, United Kingdom (EH); Clinical Biochemistry, University of Edinburgh, The Royal Infirmary of Edinburgh, Edinburgh, United Kingdom (GJB)