1. CIBER Epidemiology and Public Health (CIBERESP-ISCIII), 28029 Madrid, Spain
2. Nursing Department, Faculty of Medicine, Universidad Autónoma de Madrid, 28029 Madrid, Spain
3. Department of Nursing and Physiotherapy, Faculty of Nursing and Physiotherapy, University of Lleida, 25199 Lleida, Spain
4. Healthcare Research Group (GRECS), Institute of Biomedical Research in Lleida (IRB Lleida), 25198 Lleida, Spain
5. Asian Development Bank, Manila 1554, Philippines
6. Osakidetza, Nursing Teaching Unit, Cruces University Hospital, 48903 Baracaldo, Spain
7. Faculty of Nursing, Dalla Lana School of Public Health, University of Toronto, Toronto, ON M5T 3M7, Canada
8. Department of Global Health and Development, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
9. Saw Swee Hock School of Public Health, National University of Singapore, Singapore 117549, Singapore