From the Institute of Human Genetics (S.R.-S., J. Senderek, T.E., K.Z.), Medical Faculty, University Hospital Aachen, Germany; Departments of Neurology (J.C.J.), Human Genetics (M.Y., S.F.N.), Pathology & Laboratory Medicine (S.F.N.), and Psychiatry (S.F.N.), University of California, Los Angeles; Center for Medical Genetics and Molecular Medicine (G.H.), Haukeland University Hospital, Bergen, Norway; Department of Child Neurology (P.S.), 2nd Faculty of Medicine, Charles University Prague and... (At 2013-01-29)