Affiliation: | 1. Graham Headache Center, Brigham and Women’s Faulkner Hospitals, Boston, MA, USA;2. Neuroalgology Unit, IRCCS Fondazione Istituto Neurologico “Carlo Besta”, Milan, Italy Department of Biomedical and Clinical Sciences “Luigi Sacco”, University of Milan, Milan, Italy;3. Headache and Neuroalgology Unit, IRCCS Fondazione Istituto Neurologico “Carlo Besta”, Milan, Italy |