Viboud Cécile, Simonsen Lone
Division of International Epidemiology and Population Studies, Fogarty International Center, National Institutes of Health, Bethesda, MD 20892, USA.
Lancet. 2013 Jul 13;382(9887):106-8. doi: 10.1016/S0140-6736(13)61447-6. Epub 2013 Jun 24.