1. Division of Hematopathology, Mayo Clinic, Rochester, Minnesota, USA
2. Electron Microscope Core Facility, Mayo Clinic, Rochester, Minnesota, USA
3. Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota, USA
4. Departments of Laboratory Medicine, Pathology, and Pediatrics, University of Minnesota School of Medicine, Minneapolis, Minnesota, USA
5. Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA