MacGregor Graham A, He Feng J, Pombo-Rodrigues Sonia
Wolfson Institute of Preventive Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
Wolfson Institute of Preventive Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK.
BMJ. 2015 Apr 28;350:h1936. doi: 10.1136/bmj.h1936.