Media type: E-Article Title: Preface Contributor: Straumann, Alex Published: S. Karger AG, 2014 Published in: Digestive Diseases, 32 (2014) 1-2, Seite 5-5 Language: English DOI: 10.1159/000357000 ISSN: 1421-9875; 0257-2753 Origination: Footnote: