1. Division of General Internal Medicine, Perelman School of Medicine at the University of Pennsylvania and the Philadelphia VA Medical Center, Philadelphia, Pennsylvania.
2. Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin.
3. Department of Medicine, Cook County Health, Chicago, Illinois.
4. Dell Medical School, Austin, Texas.
5. School of Education, Duquesne University, Pittsburgh, Pennsylvania.
6. Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
7. Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin.
8. Department of Surgery, Cook County Health and Hospital System, Chicago, Illinois.