1. Department of Health Science; School of Medicine; University of Catanzaro; Catanzaro Italy
2. Pediatric Unit; “Pugliese Ciaccio” Hospital; Catanzaro Italy
3. Center for Childhood Headache; Clinic of Child and Adolescent Neuropsychiatry; Department of Mental Health, Physical, and Preventive Medicine; Second University of Naples; Naples Italy
4. Department of Pediatrics and Child Neuropsychiatry; University “La Sapienza; Roma Italy