title: Variation, treatment, and redefining orthodontics.
authors.forename: Michael
authors.initials: M
authors.lastname: Harkness
mesh_terms: D000402:Airway Obstruction / Q000150:complications; D006801:Humans; D008310:Malocclusion / Q000209:etiology / Q000628:therapy; D009967:Orthodontic Appliances; D009970:Orthodontics / Q000706:statistics & numerical data; D009971:Orthodontics, Corrective / Q000639:trends*; D012690:Serial Extraction