Udawat H, Sharma A, Dutta U, Yadav T D, Vaiphei K, Singh S, Kochhar R
Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Endoscopy. 2008 Sep;40 Suppl 2:E113-4. doi: 10.1055/s-2007-966704. Epub 2008 May 8.