Retter Jürgen, Neff Wolfgang, Singer Manfred V
Department of Medicine II (Gastroenterology, Hepatology and Infectious Diseases), University Hospital of Heidelberg at Mannheim, Mannheim, Germany.
Clin Gastroenterol Hepatol. 2008 Jan;6(1):A20. doi: 10.1016/j.cgh.2007.10.019. Epub 2007 Dec 11.