1. Oncology Unit; Hospital General de Granollers; Granollers
2. Medical Oncology Service; Hospital Carlos Haya; Málaga
3. Institut Català D'Oncologia (ICO) Hospital Duran i Reynals; L'Hospitalet de Llobregat; Barcelona
4. Medical Oncology Service; Hospital Universitario Puerta de Hierro; Majadahonda; Madrid
5. Medical Oncology Service; Hospital Universitario Vall Hebrón; Barcelona
6. Medical Oncology Service; Complejo Hospitalario Universitario A Coruña; A Coruña
7. Medical Oncology Service; Hospital Santa Maria Rosell; Cartagena; Murcia
8. Hematology Service; Hospital Clínico Universitario de Salamanca; Salamanca
9. Amgen, S.A.; Barcelona
10. Department of Clinical Hematology; Hospital del Mar; Barcelona; Spain