1. Program in Occupational Therapy, Washington University School of Medicine, St. Louis, MO, USA
2. Departments of Neurology and Pediatrics, Washington University School of Medicine, St. Louis, MO, USA
3. Division of Pediatric Neurology, Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
4. University of Groningen, University Medical Centre Groningen, Department of Pediatrics, Division of Developmental Neurology, Groningen, the Netherlands