1. Assistant Clinical Professor of Medicine, Michigan State University and Research Associate, The Upjohn Company, Kalamazoo, Michigan, USA
2. Professor of Medicine, Temple University, Philadelphia, Pennsylvania, USA
3. Associate Clinical Professor of Medicine, University of California, San Francisco, California, USA
4. Professor of Medicine, University of Utah, Salt Lake City, Utah, USA
5. Assistant Clinical Professor of Medicine, Baylor College of Medicine, Houston, Texas, USA