Pysz Marybeth A, Willmann Jürgen K
Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, California 94305, USA.
Gastroenterology. 2011 Mar;140(3):785-90. doi: 10.1053/j.gastro.2011.01.027. Epub 2011 Jan 18.