1. Departament de Genètica, Facultat de Biologia, Universitat de Barcelona, Spain
2. Institut de Biomedicina de la Universitat de Barcelona (IBUB), Spain
3. Center for Biomedical Network Research on Rare Diseases (CIBERER)-Institute of Health Carlos III, Spain
4. Headache and Neurological Pain Laboratory, Vall d’Hebron Research Institute, Universitat Autònoma de Barcelona, Spain
5. Headache Unit, Neurology Department, Hospital Universitari Vall d'Hebron, Spain
6. Pediatric Neurology Research Group, Vall d’Hebron Research Institute, Universitat Autònoma de Barcelona, Spain
7. Neurology Service, Hospital Sant Joan de Déu (Fundació Althaia), Spain
8. Department of Statistics, University of Barcelona, Spain