title: 'Developmental impairment that is not immaturity'.
authors.forename: Bernard
authors.initials: B
authors.lastname: Dan
authors.forename: Guy
authors.initials: G
authors.lastname: Chéron
mesh_terms: D017204:Angelman Syndrome / Q000150:complications*; D002648:Child; D002658:Developmental Disabilities / Q000503:physiopathology*; D006801:Humans; D007223:Infant; D015233:Models, Statistical; D009043:Motor Activity / Q000502:physiology; D009069:Movement Disorders / Q000209:etiology*