title: Letters to the editors.
authors.forename: C
authors.initials: C
authors.lastname: Santander
authors.forename: R
authors.initials: R
authors.lastname: Moreno-Otero
authors.forename: J
authors.initials: J
authors.lastname: Maté
mesh_terms: D000284:Administration, Oral; D000287:Administration, Topical; D019274:Botulinum Toxins, Type A / Q000008:administration & dosage; D004106:Dilatation / Q000379:methods; D005401:Fissure in Ano / Q000188:drug therapy*; D005765:Gastrointestinal Agents / Q000008:administration & dosage; D006801:Humans; D015552:Injections, Intralesional; D009465:Neuromuscular Agents / Q000008:administration & dosage*
chemical_list: D005765:Gastrointestinal Agents; D009465:Neuromuscular Agents; D019274:Botulinum Toxins, Type A