Affiliation: | 1. Child & Adolescent Headache Program, University of California, San Francisco, San Francisco, CA, USA;2. Division of Neurology, Children’s Hospital of Philadelphia & Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA Division of Neurology, Children’s Hospital of Philadelphia & Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA;3. Division of Sleep and Circadian Disorders, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA;4. Department of Epidemiology & Biostatistics, University of California, San Francisco, San Francisco, CA, USA Research Institute, California Pacific Medical Center, San Francisco, CA, USA;5. Academic Research Systems, University of California, San Francisco, San Francisco, CA, USA;6. Department of Epidemiology & Biostatistics, University of California, San Francisco, San Francisco, CA, USA |