1. Mayo Clinic School of Medicine, Mayo Clinic, Rochester, MN, USA;
2. Division of Hematology, Mayo Clinic, Rochester, MN, USA;
3. Division of Hematopathology, Mayo Clinic, Rochester, MN, USA;
4. Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA;
5. Division of Hematology and Medical Oncology, Mayo Clinic, Phoenix, AZ, USA;
6. Division of Hematology/Oncology, Mayo Clinic, Jacksonville, FL, USA