1. Health School, Polytechnic Institute of Beja, 7800 Beja, Portugal
2. Health Sciences Research Unit: Nursing (UICISA: E), Nursing School of Coimbra (ESEnfC), 3046 Coimbra, Portugal
3. School of Health, University Institute Atlântica, 2730 Barcarena, Portugal
4. Nursing Department, Health School, University of Algarve, 8000 Faro, Portugal