1. Albert Einstein College of Medicine, Bronx, NY, USA
2. Montefiore Headache Center, Bronx, NY, USA
3. North Shore Headache Center, Hofstra Northwell Health, Great Neck, NY, USA
4. Headache Center, Department of Neurology, Georgetown University, Washington, DC, USA
5. Allergan plc, Irvine, CA, USA