1. Department of Nursing and Physiotherapy, Faculty of Nursing and Physiotherapy, University of Lleida, 25008 Lleida, Spain
2. Consolidated Research Group Society, Health, Education and Culture (GESEC), University of Lleida, 25008 Lleida, Spain
3. Research Group of Health Care (GRECS), Biomedical Research Institute (IRB), 25003 Lleida, Spain
4. Department of Community Nursing, Preventive Medicine, Public Health and History of Science, University of Alicante, 03690 Alicante, Spain
5. Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP-ISCIII), 28029 Madrid, Spain
6. Department of Nursing, Faculty of Medicine, Universidad Autónoma de Madrid, 28049 Madrid, Spain