1. Oral Medicine and Surgery Unit, Faculty of dentistry Universidade de Santiago de Compostela Santiago de Compostela Spain
2. Instituto de Investigación Sanitaria de Santiago (IDIS) Santiago de Compostela Spain
3. Department of Nursing I University of the Basque Country (UPV/EHU) Leioa Bizkaia Spain
4. Faculty of Physiotherapy, Department of Functional Biology and Health Sciences Human Anatomy and Embryology Area Pontevedra Spain