title: Changes in the diagnosis and treatment of achalasia.
authors.affiliation: Department of Surgery and Center for Esophageal Diseases, University of Chicago Pritzker School of Medicine, Chicago, Illinois, USA.
authors.forename: Mauricio
authors.initials: M
authors.lastname: Ramirez
authors.affiliation: Department of Surgery and Center for Esophageal Diseases, University of Chicago Pritzker School of Medicine, Chicago, Illinois, USA.
authors.forename: Marco G
authors.initials: MG
authors.lastname: Patti