1. Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
2. Division of Hematology and Oncology, Northwestern Medical Center, Chicago, Illinois, USA
3. Department of Medicine, Division of Hematology and Oncology, University of California San Francisco, San Francisco, California, USA
4. Department of Internal Medicine, University of Texas, San Antonio, Texas, USA
5. Division of Hematology, Mayo Clinic, Rochester, Minnesota, USA
6. Universidad Nacional Mayor de San Marcos, San Fernando Faculty of Human Medicine, Lima, Peru
7. Mayo Clinic Alix School of Medicine, Rochester, Minnesota, USA
8. Department of Medicine, Division of Hematology and Oncology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
9. Department of Internal Medicine, Mayo Clinic, Phoenix, Arizona, USA
10. Department of Medicine, Division of Hematology, Medical Oncology and Palliative Care, Madison, Wisconsin, USA