1. Department of Laboratory Medicine and Pathology; University of Minnesota Medical Center; 420 Delaware St SE Minneapolis Minnesota
2. Department of Pathology; Marshfield Clinic; 3401 Cranberry Blvd Weston Wisconsin
3. University of Michigan; 1500 E. Medical Center Drive Ann Arbor Michigan
4. University Hospitals Case Medical Center, Case Western Reserve University; 11100 Euclid Ave, Rm 212B Cleveland Ohio