Trends and outcomes of intraoperative esophagogastroduodenoscopy during laparoscopic Heller myotomy: a National Surgical Quality Improvement Program analysis
1 Division of Upper Gastrointestinal and General Surgery, Department of Surgery, Keck Medical Center of University of Southern California, Los Angeles, California, United States. Electronic address: paul.wisniowski@med.usc.edu.
2 Division of Upper Gastrointestinal and General Surgery, Department of Surgery, Keck Medical Center of University of Southern California, Los Angeles, California, United States.