Wong Richard C K
Division of Gastroenterology and Liver Disease, Department of Medicine, University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, Ohio 44106-5066, USA.
Gastroenterology. 2009 Dec;137(6):1897, 1902. doi: 10.1053/j.gastro.2009.10.018. Epub 2009 Oct 17.