title: One phase or two, and Buridan's paradox.
authors.affiliation: St Louis, Mo.
authors.forename: Rolf G
authors.initials: RG
authors.lastname: Behrents
mesh_terms: D000066491:Clinical Decision-Making; D006801:Humans; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D009971:Orthodontics, Corrective / Q000379:methods*