1. Department of Child and Adolescent Neurology and Psychiatry, University of Rome ‘La Sapienza’, Rome, Interuniversitary Center for the Study of Child and Adolescent Headache, University of Rome ‘La Sapienza’, Rome, Childhood Headache Centre, Rome
2. Department of Psychology, University of Rome ‘La Sapienza’, Rome
3. Centre for Sleep Disorders, San Raffaele Hospital, Milan, Italy