1. Department of Education and Training, Catalan Institute of Oncology, Barcelona, Spain.
2. Catalonia Chronic Care Research Group, University of Vic-Central University of Catalonia, Vic, Barcelona, Spain.
3. Nursing Department, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, Spain; Consorci Sanitari Parc Taulí, Sabadell, Spain.
4. Research Group on Methodology, Methods, Models, and Health and Social Outcomes, Faculty of Health Science and Welfare, Centre for Health and Social Care Research, University of Vic-Central University of Catalonia, Vic, Barcelona, Spain.
5. Department of Statistics, Biomedical Research Institute of Bellvitge (IDIBELL), Barcelona, Spain.
6. Escoles Universitàries Gimbernat (Universitat Autònoma de Barcelona), Sant Cugat del Vallès, Barcelona, Spain.