Lee Maximilian, Vajro Pietro, Keeffe Emmet B
Division of Gastroenterology and Hepatology, Department of Medicine, Stanford University Medical Center, Stanford, CA 94305-5187, USA.
Dig Dis Sci. 2011 Feb;56(2):311-3. doi: 10.1007/s10620-011-1575-4. Epub 2011 Jan 19.