by Samant, Hrishikesh, Desai, Devendra, Abraham, Philip, Joshi, Anand, Gupta, Tarun, Rodrigues, Camilla, George, Siji
Published in Indian journal of gastroenterology (01.09.2014)

by Palmer, K R, Patil, D H, Basran, G S, Riordan, J F, Silk, D B
Published in Gut (01.12.1985)