Tran Thomas, Hampel Howard, Qureshi Waqar A, Shaib Yasser
Section of Gastroenterology, The Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas 77030, USA.
Dig Dis Sci. 2007 Nov;52(11):3178-80. doi: 10.1007/s10620-006-9331-x. Epub 2007 Jul 20.