Media type: E-Article Title: Reply Contributor: Achkar, Edgar; Sivak, Michael V. Published: Elsevier BV, 1991 Published in: Gastroenterology, 101 (1991) 4, Seite 1145 Language: English DOI: 10.1016/0016-5085(91)90762-a ISSN: 0016-5085 Keywords: Gastroenterology ; Hepatology Origination: Footnote: Access State: Open Access