1. Faculty of Nursing, Physiotherapy and Podiatry, University of Seville, 41009 Seville, Spain
2. Institute of Biomedicine of Seville (IBiS), 41013 Seville, Spain
3. Department of Sociology, Faculty of Social Sciences and Humanities (NOVA FCSH), Interdisciplinary Centre of Social Sciences (CICS.NOVA), Nova University Lisbon (NOVA), 1069-061 Lisbon, Portugal
4. Faculty of Medicine-Biostatistics Unit, University of Granada, 18016 Granada, Spain