1. Department of Pediatrics Cruces University Hospital Barakaldo Bizkaia Spain
2. Doctoral Programme in Medicine and Surgery University of the Basque Country Leioa Bizkaia Spain
3. Pediatric Palliative Care and Home Hospitalisation, Department of Pediatrics Cruces University Hospital Barakaldo Bizkaia Spain
4. Department of Pediatrics Faculty of Medicine University of the Basque Country Leioa Bizkaia Spain
5. Biocruces Bizkaia Health Research Institute Barakaldo Bizkaia Spain
6. Pediatric Hematology and Oncology Department of Pediatrics Cruces University Hospital Barakaldo Bizkaia Spain