Prasad H, Poddar U, Thapa B R, Narashiman K L, Singh K
Division of Pediatric Gastroenterology, Department of Gastroenterology and Pediatric Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Gastrointest Endosc. 2000 Dec;52(6):804-6. doi: 10.1067/mge.2000.110080.