| Affiliation: | Interventional and Pancreatobiliary Endoscopy Section, Washington University School of Medicine, St. Louis, MO;Division of Gastroenterology, Section of Interventional Endoscopy, Washington University School of Medicine, Campus Box 8124, 660 South Euclid Avenue, St. Louis, MO 63110;Division of Gastroenterology, Section of Interventional Endoscopy, Washington University School of Medicine, Campus Box 8124, 660 South Euclid Avenue, St. Louis, MO 63110;Division of Gastroenterology, Section of Interventional Endoscopy, Washington University School of Medicine, Campus Box 8124, 660 South Euclid Avenue, St. Louis, MO 63110 |
