Affiliation: | Interuniversity Centre, Neurochemistry and Clinical Pharmacology of Idiopathic Headache. Genoa Unit: Department of EndocrinologicaI and Metabolic Sciences, University of Genoa, Italy and; Interuniversity Centre, Neurochemistry and Clinical Pharmacology of Idiopathic Headache. Florence Unit: Institute of Internal Medicine and Therapeutics IV, Headache Centre, Florence, Italy |