1. Department of Basic Science and School of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain.
2. Department of Nursing, School of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain.
3. Department of Medicine, School of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain.
4. Palliative Care Service, Institut Català d'Oncologia, Girona, Spain.