1. University of Utah; Departments of Pediatrics and Neurology; Salt Lake City Utah
2. Dubowitz Neuromuscular Centre; UCL Institute of Child Health and Great Ormond Street Hospital for Children; London UK
3. Neurogenetics Branch; National Institute of Neurological Disorders and Stroke, NIH; Bethesda Maryland
4. University of Utah; Department of Human Genetics; Salt Lake City Utah
5. Center for Gene Therapy; Nationwide Children's Hospital; Columbus Ohio
6. Prevention Genetics; Marshfield Wisconsin