1. Public Health and Disability Unit, Neurological Institute “C. Besta” IRCCS Foundation; Neurology Milan Italy
2. e-Campus University; Novedrate Italy
3. Headache and Neuroalgology Unit; Neurological Institute “C. Besta” IRCCS Foundation; Milan Italy
4. John R. Graham Headache Center, Department of Neurology; Brigham and Women's Faulkner Hospital; Boston MA USA