Hospital Clinic of Barcelona, Hospital Universitario de Salamanca, Hospital Universitario de Salamanca, Hospital Clinic of Barcelona, Hospital Universitario Mutua de Terrassa, University of Barcelona - Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clinic of Barcelona, Hospital Clinic of Barcelona, Miguel Servet University Hospital - Hematology Department, Miguel Servet University Hospital - Hematology Department, Hospital General Virgen del Rocío, Hospital Germans Trias y Pujol (ICO-IJC) - Hematology Department, Hospital Germans Trias y Pujol (ICO-IJC) - Hematology Department, Hospital Duran i Reynals (ICO) - Hematology Department, Hospital Duran i Reynals (ICO) - Hematology Department, Autonomous University of Barcelona - Health Services Research Unit, Autonomous University of Barcelona - Health Services Research Unit, Hospital de la Princesa - Hematology Department, Hospital de la Princesa - Hematology Department, Hospital Clínico de Valencia, Hospital Clínico de Valencia, Instituto de Investigación Sanitaria Hospital "12 de Octubre" - Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital "12 de Octubre" - Hospital Universitario 12 de Octubre, Hospital Marqués de Valdecilla, Hospital de Nuestra Señora de la Esperanza - Hematology Department, Hospital MD Anderson - Hematology Department, Hospital Sant Pau - Hematology Department, Hospital del Bierzo - Hematology Department, Hospital infanta Leonor - Hematology Department, Hospital Virgen del Puerto - Hematology Department, Universidad Autónoma de Madrid - IIS-Fundación Jiménez Díaz, Hospital Universitario de Salamanca, Hospital Universitario de Salamanca, Hospital Universitario de Salamanca and Hospital Clinic of Barcelona