Langlois Etienne V, Haines Andy, Tomson Göran, Ghaffar Abdul
Alliance for Health Policy and Systems Research, World Health Organization, Geneva 1211, Switzerland.
Departments of Social and Environmental Health Research and of Population Health, London School of Hygiene & Tropical Medicine, London, UK.
Lancet. 2016 Jan 23;387(10016):319-321. doi: 10.1016/S0140-6736(16)00101-X.