1. Department of Child Neurology University of Colorado School of Medicine Aurora Colorado USA
2. Department of Child Neurology Children's Hospital of Colorado Aurora Colorado USA
3. Division of Behavioral Medicine and Clinical Psychology Cincinnati Children's Hospital Medical Center Cincinnati Ohio USA
4. Department of Pediatrics, Community Health Sciences University of Calgary Calgary Alberta Canada
5. Department of Clinical Neurosciences, Cumming School of Medicine University of Calgary Calgary Alberta Canada
6. Department of Pediatrics University of Cincinnati College of Medicine Cincinnati Ohio USA
7. Division of Behavioral Medicine and Clinical Psychology Cincinnati Children's Hospital Cincinnati Ohio USA
8. Headache Center Cincinnati Children's Hospital Cincinnati Ohio USA