Affiliation: | Headache Clinic, INM Neuromed, IRCCS, Pozzilli (Isernia) ,Italy,;University Department of Neurology, CHR Citadelle, Liège, Belgium,;Headache &Pain Unit, Department of Neurology, University of Zürich, Switzerland, and;Department of Neuroanatomy, University of Liège, Liège, Belgium |