1. Department of Internal Medicine, Kansas University School of Medicine, Wichita2Department of Preventive Medicine and Public Health, Kansas University School of Medicine, Wichita
2. Department of Internal Medicine, Kansas University School of Medicine, Wichita3Department of Pediatrics, Kansas University School of Medicine, Wichita
3. A. R. Dykes Library, Kansas University School of Medicine, Wichita
4. PERFUSE Study Group, Cardiovascular Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts