Wijegunawardana, N.D.A.D.; Gunawardene, Y.I.N.S.; Abeyewickreme, W.; Chandrasena, T.G.A.N.; Dassanayake, R.S.; Manamperi, A.(Springer Science and Business Media Deutschland GmbH, 2020)
Wijegunawardana, N.D.A.D.; Gunawardene, Y.I.N.S.; Manamperi, A.; Senarathne, H.; Abeyewickreme, W.(SEAMEO Regional Tropical Medicine and Public Health Project, 2012)