1. Division of Hematology and Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI;
2. Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN;
3. Department of Dermatology, University of Utah, Salt Lake City, UT;
4. Division of Hematology, Department of Internal Medicine, Mayo Clinic, Rochester, MN;
5. Department of Pathology, and
6. Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI; and
7. Department of Dermatology, Mayo Clinic, Rochester, MN