Soetikno Roy, Kaltenbach Tonya, Binmoeller Kenneth, Friedland Shai, Burdon Thomas
Veterans Affairs Palo Alto Health Care System and Stanford University School of Medicine, Palo Alto, California, USA.
Gastroenterology. 2008 May;134(5):1290-2. doi: 10.1053/j.gastro.2008.03.047.