title: Rear delivery system.
authors.affiliation: Modern Orthodontic Designs, Colorado Springs, CO 80906, USA.
authors.forename: W
authors.initials: W
authors.lastname: Hamula
authors.forename: D W
authors.initials: DW
authors.lastname: Hamula
mesh_terms: D003748:Dental Equipment; D003770:Dental Offices; D016272:Occupational Health; D009970:Orthodontics; D011187:Posture; D013996:Time and Motion Studies