Frequent and potentially fatal envenoming by hump-nosed pit vipers (Hypnale hypnale and H. nepa) in Sri Lanka: lack of effective antivenom. (Transactions of the Royal Society of Tropical Medicine and Hygiene, 2008)

(untitled) - Ariaratnam, C; Thuraisingam, V; Kularatne, SA; Sheriff, M; Theakston, R; de Silva, A; Warrell, D