title: Chronic anal fissure: Surgical or reversible neurochemical sphincterotomy?
authors: Giuseppe
authors: G
authors: Brisinda
authors: Serafino
authors: S
authors: Vanella
mesh_terms: D001003:Anal Canal / Q000601:surgery; D019274:Botulinum Toxins, Type A / Q000008:administration & dosage; D002908:Chronic Disease; D005401:Fissure in Ano / Q000188:drug therapy* / Q000601:surgery*; D006801:Humans; D009465:Neuromuscular Agents / Q000008:administration & dosage*
chemical_list: D009465:Neuromuscular Agents; D019274:Botulinum Toxins, Type A