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Gastroenterology
; 133(6): 1768, 2078, 2007 Dec.
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in English
| MEDLINE
| ID: mdl-18054548
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J Am Coll Surg
; 205(3): 468-78 (Quiz 524), 2007 Sep.
Article
in English
| MEDLINE
| ID: mdl-17765164