1. Division of Hematologic Malignancies Dana‐Farber Cancer Institute Boston Massachusetts USA
2. Instituto Nacional de Cancerologia and Hospital Militar Central Bogota Colombia
3. Department of Oncology and Radiotherapy, Hospital Edgardo Rebagliati Martins and Instituto de Ciencias Biomedicas Universidad Ricardo Palma Lima Peru
4. Division of Hematology and Oncology University of North Carolina Chapel Hill North Carolina USA
5. Department of Lymphoma and Myeloma University of Texas MD Anderson Cancer Center Houston Texas USA
6. Department of Medicine Harvard Medical School Boston Massachusetts USA