1. 1Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana.
2. 2Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana.
3. 3Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
4. 4Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
5. 5Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana.
6. 6VA Roudebush Medical Center, Indianapolis, Indiana.