Campana D, Brocchi E, Tomassetti P
Department of Internal Medicine and Gastroenterology, University of Bologna, S.Orsola Malpighi Hospital, Via Massarenti 9, 40138 Bologna, Italy.
Dig Liver Dis. 2008 Jun;40(6):476. doi: 10.1016/j.dld.2007.11.030. Epub 2008 Feb 20.