Department of Health Sciences. Faculty of Nursing and Podiatry. University of A Coruña (UDC) Ferrol Campus, 15471, Ferrol, Spain. Rheumatology and Public Health Research Group, Nursing Research and Health Care, Biomedical Research Institute of A Coruña (INIBIC), Complejo Hospitalario Universitario de A Coruña (CHUAC), SERGAS, University of Coruña (UDC), As Xubias 84, 15006 A Coruña, Spain. Coordinator of the Endocrinology and Nutrition Unit Ferrol Naval Hospital (Ferrol Health Area). Department of Health Sciences. University of A Coruña (UDC). Ferrol Campus, 15471, Ferrol, Spain. Research Support Unit. Rio Hortega University Hospital. Dulzaina 2. 47012, Valladolid, Spain. Nurse at the Ferrol University Hospital Complex (Ferrol Health Area). Avda. de la Residencia s/n. 15405 Ferrol, Spain.