1. Department of Pediatrics, Division of Neurology University of Arkansas for Medical Sciences, Arkansas Children’s Hospital Little Rock Arkansas USA
2. Department of Pediatrics, Division of Neurology, Nationwide Children’s Hospital The Ohio State University College of Medicine Columbus Ohio USA
3. Experimental Neurotherapeutics St. Jude Children’s Research Hospital Memphis Tennessee USA
4. Department of Pediatrics University of Iowa Carver College of Medicine Iowa city Iowa USA
5. Department of Pediatrics, Division of Neurology Duke University Medical Center, Durham North Carolina USA
6. Department of Pediatrics University of Texas Southwestern Medical Center Dallas Texas USA
7. Department of Pediatrics and Neurology University of Utah School of Medicine Salt Lake City Utah USA
8. Department of Neurology and Pediatrics University of Colorado School of Medicine Aurora Colorado USA
9. University of Liège Neuromuscular Reference Center Disease, Department of Pediatrics Liege Belgium
10. MDUK Neuromuscular Center, Department of Pediatrics University of Oxford United Kingdom
11. Department of Pediatrics, Division of Neurology, Ann and Robert H. Lurie Children's Hospital of Chicago Northwestern University Feinberg School of Medicine Chicago Illinois USA
12. Division of Neurology, Children’s Hospital of Philadelphia, Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania USA
13. Pediatric Neurology, Catholic University; Centro Clinico Nemo, Policlinico Gemelli Fondazione Policlinico Universitario Agostino Gemelli IRCCS Rome Italy
14. Department of Neurology University of Rochester Medical Center Rochester, New York USA