title: Historical controls in orthodontics: need for larger meta-epidemiological studies.
authors.affiliation: Orthodontic Graduate Program, School of Dentistry, University of Alberta, Edmonton, Canada.
authors.forename: Humam
authors.initials: H
authors.lastname: Saltaji
mesh_terms: D003729:Dental Care; D016021:Epidemiologic Studies; D006801:Humans; D009970:Orthodontics