title: Whistle-tip suction catheter for pre-endoscopic aspiration in achalasia.
authors.forename: C J
authors.initials: CJ
authors.lastname: Buchalter
authors.forename: J S
authors.initials: JS
authors.lastname: Barkin
mesh_terms: D002404:Catheterization; D004931:Esophageal Achalasia / Q000175:diagnosis* / Q000209:etiology; D004945:Esophagoscopy / Q000379:methods; D006801:Humans; D013396:Suction / Q000295:instrumentation