1. ; Division of Neurology, Childrens Hospital Los Angeles, Keck School of Medicine; University of Southern California; Los Angeles California USA
2. ; Division of Medical Genetics, Childrens Hospital Los Angeles, Keck School of Medicine; University of Southern California; Los Angeles California USA
3. ; CHLA Division of Neurology, Keck School of Medicine; University of Southern California, 4650; Sunset Blvd., MS 82 Los Angeles CA 90027 USA. E-mail
4. ; Department of Pediatrics, Division of Medical Genetics, Childrens Hospital Los Angeles, Keck School of Medicine; University of Southern California; Los Angeles California USA