1. Department of Nursing, Faculty of Health Sciences, Melilla Campus, University of Granada, 52005 Melilla, Spain
2. Department of Nursing, Faculty of Health Sciences, University of Granada, 18016 Granada, Spain
3. Instituto de Investigación Biosanitaria (ibs.GRANADA), 18014 Granada, Spain
4. Department of Statistics and O.I., Faculty of Medicine, University of Granada, 18016 Granada, Spain
5. Department of Food and Health, Instituto de la Grasa-CSIC, Campus of the University Pablo de Olavide, 41013 Seville, Spain