Kumble S Madhusudhan1, Premananda Pattanaik2, Nihar Ranjan Dash2, Sujoy Pal2,
Vineet Ahuja3, Deep N Srivastava1, Peush Sahni2
Departments of 1Radiodiagnosis, 2Gastrointestinal Surgery and 3Gastroenterology, All India Institute of Medical Sciences, New Delhi, India.