1. Department of Nursing, Faculty of Health Sciences of Melilla, University of Granada, 52017 Melilla, Spain
2. Department of Nursing, Faculty of Health Sciences, University of Almería, 04120 Almería, Spain
3. Department of Nursing, Faculty of Health Sciences, University of Malaga, 29071 Malaga, Spain
4. Department of Nursing, Faculty of Health Sciences of Ceuta, University of Granada, 51001 Ceuta, Spain
5. Centre for the Temporary Stay of Immigrants of the Autonomous City of Melilla, 52004 Melilla, Spain