1. Department of Neurology George Washington University School of Medicine Washington DC USA
2. Global Medical Affairs Allergan plc Irvine CA USA
3. Department of Neurology Montefiore Headache Center Albert Einstein College of Medicine Bronx NY USA
4. Department of Neurology Jefferson Headache Center Philadelphia PA USA
5. Department of Statistics Pharmaceutical Product Development Austin TX USA
6. Department of Neurology Headache Center of Southern California The Neurology Center Carlsbad CA USA