Rerknimitr R, Kongkam P, Kullavanijaya P
Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Endoscopy. 2007 Feb;39 Suppl 1:E225. doi: 10.1055/s-2007-966555. Epub 2007 Jul 5.