Läuffer J M, Baer H U, Maurer C A, Fröhling S, Scheurer U, Zimmermann A, Büchler M W
Department for Visceral and Transplantation Surgery, Institute of Pathology, University of Bern, Inselspital, Switzerland.
Dig Dis Sci. 1998 Jun;43(6):1200-4. doi: 10.1023/a:1018843421292.