Dissanayake, D.M.A.B.; Palihawadana, T.S.; Herath, H.M.R.P.; Wimalasena, S.; Ratnasooriya, W.D.; Wijesinghe, P.S.(Faculty of Allied Health Sciences, University of Peradeniya, 2009)
Herath, H.M.R.P.; Dissanayake, D.M.A.B.; Hilmi, M.A.M.; Pathmeswaran, A.; Wijesinghe, P.S.(Faculty of Medicine, University of Kelaniya & Plan International, 2008)