title: Invited commentary.
authors.affiliation: Division of Physical Therapy, Emory University School of Medicine, 1441 Clifton Rd NE, Atlanta, GA 30322, USA. jcharl3@emory.edu
authors.forename: Jeanne
authors.initials: J
authors.lastname: Charles
authors.forename: Steven L
authors.initials: SL
authors.lastname: Wolf
mesh_terms: D002547:Cerebral Palsy / Q000534:rehabilitation*; D002648:Child; D006429:Hemiplegia / Q000534:rehabilitation*; D006801:Humans; D007103:Immobilization / Q000379:methods*; D009068:Movement; D034941:Upper Extremity