Parente Fabrizio, Anderloni Andrea, Zerbi Pietro, Lazzaroni Marco, Sampietro Gianluca, Danelli Piergiorgio, Bianchi Porro Gabriele
Department of Gastroenterology, L. Sacco University Hospital, Milan, Italy.
Gastrointest Endosc. 2005 Jan;61(1):180-3. doi: 10.1016/s0016-5107(04)02450-2.