1. Department of Nursing and Physiotherapy, University of Salamanca, 37007 Salamanca, Spain
2. Instituto de Investigación Biomédica de Salamanca (IBSAL), 37007 Salamanca, Spain
3. Department of Developmental and Educational Psychology, University of Salamanca, 37005 Salamanca, Spain
4. Department of Medicine, University of Salamanca, 37007 Salamanca, Spain
5. Medical Oncology Unit, University Hospital of Salamanca, 37007 Salamanca, Spain