机构:
UNIV PITTSBURGH, SCH MED, DEPT MED, DIV GASTROENTEROL, PITTSBURGH, PA 15261 USAUNIV PITTSBURGH, SCH MED, DEPT MED, DIV GASTROENTEROL, PITTSBURGH, PA 15261 USA
STONE, BG
VANTHIEL, DH
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机构:
UNIV PITTSBURGH, SCH MED, DEPT MED, DIV GASTROENTEROL, PITTSBURGH, PA 15261 USAUNIV PITTSBURGH, SCH MED, DEPT MED, DIV GASTROENTEROL, PITTSBURGH, PA 15261 USA