Conio Massimo, Buscarini Elisabetta, Blanchi Sabrina, Lapertosa Gabriella, Zambelli Alessandro
Department of Gastroenterology, National Institute for Cancer Research, Genoa, Italy.
Gastrointest Endosc. 2004 Sep;60(3):434-5. doi: 10.1016/s0016-5107(04)01701-8.