1. Periodontology UnitFaculty of Medicine and OdontologyUniversity of Santiago de Compostela Santiago de Compostela Spain
2. Odontología Médico‐Quirúrgica (OMEQUI) Research GroupHealth Research Institute of Santiago de Compostela (IDIS) Santiago de Compostela Spain
3. Service of NeurologyHeadache UnitHospital Clínico UniversitarioUniversity of Santiago de Compostela Santiago de Compostela Spain