School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom.|Intelligent Systems Laboratory, University of Bristol, Bristol, United Kingdom.|School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom.|Department of Non-communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom.|School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom, MRC Integrative Epidemiology Unit, University of Bristol, Bristol, United Kingdom.