1. School of Doctorate, University of Huelva, 21007 Huelva, Spain
2. Department of Building Construction II, Higher Technical School of Building Engineering, University of Seville, 41012 Sevilla, Spain
3. Department of Nursing, Faculty of Nursing, Physiotherapy and Podiatry, University of Seville, 41009 Sevilla, Spain
4. Department of Sociology, Social Work and Public Health, Faculty of Labour Sciences, University of Huelva, 21007 Huelva, Spain
5. Safety and Health Postgraduate Programme, Universidad Espíritu Santo, Guayaquil 092301, Ecuador
6. Department of Economy, Faculty of Labour Sciences, University of Huelva, 21007 Huelva, Spain
7. Department of Nursing, Faculty of Health Sciences of Melilla, University of Granada, 52005 Melilla, Spain
8. Centro Universitario de Enfermería Cruz Roja, Universidad de Sevilla, 41009 Sevilla, Spain
9. Department of Nursing, Faculty of Health Sciences of Ceuta, University of Granada, 51005 Ceuta, Spain