1. Nurse Practitioner, Paediatric Palliative Care Unit, Hospital Infantil Universitario Niño Jesús Hospital for Children, Madrid, Spain
2. Head of Pediatric Palliative Care, Paediatric Palliative Care Unit, Hospital Infantil Universitario Niño Jesús Hospital for Children, Madrid, Spain
3. Associate Professor Universidad de Alcalá de Henares, School of Medicine and Health Sciences, Nursing Department, Madrid, Spain