1. Department of Neurology, Mayo Clinic, Phoenix, AZ, USA
2. Albert Einstein College of Medicine, Bronx, NY, USA
3. MedStar Georgetown University Hospital, Washington, DC, USA
4. Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
5. IRCCS Mondino Foundation, Headache Science Center, Pavia, Italy
6. Department of Neurology, University of Pavia, Pavia, Italy
7. Neuroscience Development, AbbVie, Madison, NJ, USA