title: Pneumatic Dilation versus Laparoscopic Heller's Myotomy for Idiopathic Achalasia (N Engl J Med 2011;364:1807-1816).
authors.affiliation: Institute of Digestive Disease, The Chinese University of Hong Kong, Shatin, Hong Kong.
authors.forename: Justin C Y
authors.initials: JC
authors.lastname: Wu