Ebrahim Shah, Ferrie Jane E, Davey Smith George
London School of Hygiene and Tropical Medicine, London WC1E 7HT.
School of Social and Community Medicine, University of Bristol, Bristol BS8 2BN.
Int J Epidemiol. 2016 Dec 1;45(6):1699-1716. doi: 10.1093/ije/dyx032.