1. From the Medical Research Council Human Nutrition Research, Elsie Widdowson Laboratory, Cambridge, United Kingdom (SAJ, CSM, MDC, and LJB); the Hugh Sinclair Unit of Human Nutrition, The University of Reading, Reading, United Kingdom (JAL and CMW); the Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom (BAG); the Nutrition and Dietetic Research Group, Imperial