1. Division of Cardiology, Weill Medical College of Cornell University, New York, New York
2. Department of Clinical and Experimental Medicine, Federico II University, Naples, Italy
3. Missouri Breaks Industries Research, Timber Lake, South Dakota
4. Center for American Indian Health Research, University of Oklahoma, Oklahoma City, Oklahoma
5. Indian Health Service, University of Arizona, Tucson, Arizona
6. Medstar Research Institute, Washington, DC