Affiliation: | 1. Professor of Gastroenterology, Department of Medical Sciences, University of Turin, corso AM Dogliotti 14, 10126 Torino, Italy;2. antonio.ponzetto@unito.it ponzettoa@yahoo.it;3. Department of Biotechnology Chemistry &4. Pharmacy, University of Siena, Via A. Moro, Siena 53100, Italy |