Digestive and Liver Disease : Official Journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver|April 17, 2001
European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology|October 3, 2000
Digestive and Liver Disease : Official Journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver|April 17, 2001
European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology|October 3, 2000