TY - BOOK ED - ASGE Endoscopic Learning Library. TI - Per-oral endoscopic myotomy (POEM) for achalasia PY - 2014/// CY - [place of publication not identified] PB - American Society for Gastrointestinal Endoscopy KW - Esophageal Achalasia KW - Diagnostic Techniques, Surgical KW - Endoscopy ER -