Amarasiri, L.; Pathmeswaran, A.; Ranasinha, C.D.; de Silva, A.P.; Dassanayake, A.S.; de Silva, H.J.(American Gastroenterological Association(AGA) Institute, Published by Elsevier Inc., 2010)
Undugodage, C.; Amarasiri, L.; Kamalanathan, M.; Gunasinghe, W.; Sadikeen, A.; Fernando, A.; Wickremasinghe, R.; Gunasekera, K.(Journal of the Ceylon College of Physicians, 2019)