title: Reply.
authors.affiliation: Section of Gastroenterology and Hepatology Di.Bi.M.I.S., University of Palermo, Palermo, Italia.
authors.forename: Salvatore
authors.initials: S
authors.lastname: Petta
authors.affiliation: Section of Gastroenterology and Hepatology Di.Bi.M.I.S., University of Palermo, Palermo, Italia.
authors.forename: Antonio
authors.initials: A
authors.lastname: Craxì