title: The burden of proof: a critical review of orthodontic claims made by some general practitioners.
authors.forename: D J
authors.initials: DJ
authors.lastname: Timms
mesh_terms: D000403:Airway Resistance; D005792:General Practice, Dental; D006801:Humans; D015508:Nasal Obstruction / Q000628:therapy*; D009970:Orthodontics; D010155:Palatal Expansion Technique