Richter J, Heintges T, Thomassen D, Tannich E, Häussinger D
Clinics for Gastroenterology, Hepatology, and Infectious Diseases, University Clinics, Heinrich-Heine-University, Düsseldorf, Germany.
Gut. 2006 Jun;55(6):832, 841. doi: 10.1136/gut.2005.077487.