Sánchez, Alexis Robotic-assisted Heller myotomy versus laparoscopic Heller myotomy for the treatment of esophageal achalasia: a case-control study. [electronic resource] - Journal of robotic surgery Sep 2012 - 213-6 p. digital Publication Type: Journal Article ISSN: 1863-2483 Standard No.: 10.1007/s11701-011-0294-3 doi