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)
Amarasiri, L.; Pathmeswaran, A.; Ranasinha, C.D.; de Silva, H.J.(American Gastroenterological Association(AGA) Institute, Published by Elsevier Inc., 2008)