Bassotti G, Castellani D, Bellucci M C, Giovenali P, Natalini G, Morelli A
Gastroenterology and Hepatology Section, University of Perugia Medical School, Perugia, Italy.
Endoscopy. 2007 Feb;39 Suppl 1:E153. doi: 10.1055/s-2006-925193. Epub 2007 Jul 23.