1. The Department of Emergency Medicine; Baltimore MD
2. The Division of Cardiology; Baltimore MD
3. The Department of Medicine; Division of Clinical Chemistry; Department of Pathology; Baltimore MD
4. The Division of Cardiovascular Medicine; Baltimore MD
5. Johns Hopkins University School of Medicine; Baltimore MD
6. The University of Maryland School of Medicine; Baltimore Maryland
7. The Cardiovascular Division and Departments of Medicine and Laboratory Medicine and Pathology; Mayo Clinic and Medical School; Rochester MN