1. Hospital de la Santa Creu i Sant Pau, Nursing Care Research Group, Sant Pau Biomedical Research Institute (IIB SANT PAU), 08041 Barcelona, Spain
2. Health Center La Serra, Catalan Health Institute, 08208 Sabadell, Spain
3. Department of Nursing and Physiotherapy, University of Lleida, 25198 Lleida, Spain
4. Research Group of Health Care (GRECS), IRB Lleida, 25198 Lleida, Spain
5. Child and Adolescent Day Hospital, Sant Joan de Déu-Terres de Lleida, 25001 Lleida, Spain