title: Long-term outcome of botulinum toxin in the treatment of achalasia.
authors.forename: S
authors.initials: S
authors.lastname: Birgisson
authors.forename: J E
authors.initials: JE
authors.lastname: Richter
mesh_terms: D001905:Botulinum Toxins / Q000627:therapeutic use*; D004931:Esophageal Achalasia / Q000188:drug therapy*; D006801:Humans; D016896:Treatment Outcome
chemical_list: D001905:Botulinum Toxins