Wright David J M, Drasar Bohumil S
Medical Microbiology, Imperial College, London W6 8RF, UK.
Department of Disease Control, London School of Hygiene & Tropical Medicine, London, UK.
Lancet. 2014 Nov 8;384(9955):1651-3. doi: 10.1016/S0140-6736(14)61940-1. Epub 2014 Nov 7.