Fernando, S.D.; Goonethilleke, H.; Weerasena, K.H.; Kuruppuarachchi, N.D.; Tilakaratne, D.; de Silva, D.; Wickremasinghe, A.R.(SEAMEO Regional Tropical Medicine and Public Health Project, 2001)
Kasturiratne, A.; Pathmeswaran, A.; Fonseka, M.M.D.; Lalloo, D.G.; Brooker, S.; de Silva, H.J.(SEAMEO Regional Tropical Medicine and Public Health Project, 2005)