1. Albert Einstein College of Medicine, Bronx, NY, USA
2. Mayo Clinic, Scottsdale, AZ, USA
3. Dent Neurologic Institute, Buffalo, NY, USA
4. AbbVie, Madison, NJ, USA
5. AbbVie, Irvine, CA, USA
6. Danish Headache Center, Rigshospitalet Glostrup, University of Copenhagen, Denmark