1. University of Cambridge Metabolic Research Laboratories, Wellcome Trust-MRC Institute of Metabolic Science and Department of Paediatrics; University of Cambridge; Cambridge CB2 0QQ UK
2. MRC Elsie Widdowson Laboratory (formerly MRC Human Nutrition Research); Fulbourn Road Cambridge CB1 9NL UK
3. School of Food Science and Nutrition, Faculty of Mathematics and Physical Sciences; University of Leeds; Leeds LS2 9JT UK
4. MRC Biostatistics Unit; Cambridge Institute of Public Health; Forvie Site Robinson Way, Cambridge Biomedical Campus Cambridge CB2 0SR UK