1. Headache & Craniofacial Pain Unit, Neurology Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain
2. Headache Research Group, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
3. Pediatric Neurology Section, Hospital Universitari Vall d'Hebron (HUVH), Barcelona, Spain
4. Pediatric Neurology Research Group, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain