Agrawal Vivek, Garg Pankaj K, Mohanty Debajyoti, Jaswal Vivek
Department of Surgery, University College of Medical Sciences and Guru Teg Bahadur Hospital, University of Delhi, Delhi, India.
Saudi J Gastroenterol. 2012 Sep-Oct;18(5):345-6. doi: 10.4103/1319-3767.101143.