title: The most difficult cases.
authors.affiliation: Editor-in-Chief, JCO. editor@jco-online.com.
authors.forename: Robert G
authors.initials: RG
authors.lastname: Keim
mesh_terms: D001008:Anxiety Disorders / Q000150:complications; D001289:Attention Deficit Disorder with Hyperactivity / Q000150:complications; D002659:Child Development Disorders, Pervasive / Q000150:complications; D003730:Dental Care for Persons with Disabilities; D003866:Depressive Disorder / Q000150:complications; D006801:Humans; D008310:Malocclusion / Q000628:therapy; D028642:Persons with Psychiatric Disorders; D009771:Obsessive-Compulsive Disorder / Q000150:complications; D009971:Orthodontics, Corrective