1. Department of Haematology, Basque Health Service (Osakidetza), Araba University Hospital, Vitoria-Gasteiz, Spain
2. Nursing Unit, Basque Health Service (Osakidetza), Araba University Hospital, Vitoria-Gasteiz, Spain
3. Research Unit, Basque Health Service (Osakidetza), Debagoiena Integrated Healthcare Organisation, Arrasate-Mondragón, Spain
4. Economic Evaluation Unit, Kronikgune Institute for Health Service Research, Barakaldo, Spain
5. Economic Evaluation Unit, Biodonostia Health Research Institute, Donostia-San Sebastián, Spain