Endoscopy 1994; 26(9): 803-805
DOI: 10.1055/s-2007-1009112
© Georg Thieme Verlag KG Stuttgart · New York
The Role of Endoscopic Ultrasonography in the Biliary Tract: Ampullary Tumors
P. Fockens
- Department of Gastroenterology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
