Laverty Anthony A, de Sá Thiago Hérick, Monteiro Carlos A, Millett Christopher
Department of Primary Care and Public Health, Imperial College London, London W6 8RP, UK
Department of Nutrition, School of Public Health, University of São Paulo, São Paulo, Brazil.
BMJ. 2015 Feb 18;350:h725. doi: 10.1136/bmj.h725.