Media type: E-Article Title: Introduction Contributor: Nardone, Gerardo; Malfertheiner, Peter imprint: S. Karger AG, 2007 Published in: Digestive Diseases Language: English DOI: 10.1159/000103878 ISSN: 0257-2753; 1421-9875 Keywords: Gastroenterology ; General Medicine Origination: Footnote: