Abeysekera, R.A.Kularatne, S.A.M.Waduge, R.Sandeepana, A.G.W.Bandara, J.M.R.P.2016-01-192016-01-192013The Ceylon Medical Journal, 58(1):p.31-35https://dl.nsf.gov.lk/handle/1/21951Article