Dienstag Jules L, McHutchison John G
Gastrointestinal Unit (Medical Services) Massachusetts General Hospital, Department of Medicine and Office of the Dean for Medical Education, Harvard Medical School, Boston, Massachusetts, USA.
Gastroenterology. 2006 Jan;130(1):231-64; quiz 214-7. doi: 10.1053/j.gastro.2005.11.010.