TY - DATA AU - Lee,Tae Yoon ED - American Society for Gastrointestinal Endoscopy TI - Endoscopic papillectomy for tumors of the major duodenal papilla T2 - ASGE Endoscopic Learning Library PY - 2008/// CY - Oak Brook, Ill. PB - American Society for Gastrointestinal Endoscopy KW - Digestive System Surgical Procedures KW - Endoscopy KW - methods ER -