Pathirage L P Manoji Muditha, Kularatne Senanyake A M, Wijesinghe Sulochana, Ratnatunga Neelakanthi V I, Gawarammana Indika B
Department of Medicine, University of Peradeniya, Peradeniya, Sri Lanka.
Lancet. 2009 Dec 12;374(9706):2026. doi: 10.1016/S0140-6736(09)61491-4.