Citation:
Ratnasiri N, Kannangara BTSDP, Deshappriya N, Damayanthi BT, Karunaratne SHPP, Chandrika UG, Jansz ER, Warnasuriya ND, Priyantha N, Weliwegamage S, et al. Sri Lanka Journals Online. Galle Medical Journal. 2010;15:43–54.
Faculty of Medical Sciences, University of Sri Jayewardenepura.