title: Excessive columellar show: causes, presentations and a new therapeutic approach with onabotulinum toxin A.
authors: Derma Clinic, Riyadh, Saudi Arabia. mgtderma@yahoo.com
authors: Mohammed G
authors: MG
authors: Turkmani
authors: Koenraad
authors: K
authors: De Boulle
mesh_terms: D000328:Adult; D019274:Botulinum Toxins, Type A / Q000008:administration & dosage / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D007267:Injections; D008875:Middle Aged; D009666:Nose / Q000002:abnormalities*; D012225:Rhinoplasty / Q000379:methods*
chemical_list: D019274:Botulinum Toxins, Type A