1. 1Departments of Internal Medicine and
2. 3Ann Arbor VA Medical Center, Ann Arbor, Michigan;
3. 4James H. Quillen VA Medical Center, Mountain Home, Tennessee;
4. 5Dallas VA Medical Center, Dallas, Texas;
5. 6Department of Otolaryngology, University of Minnesota, Minneapolis, Minnesota; and
6. 7Division of Cancer Prevention, National Cancer Institute, Bethesda, Maryland
7. 2Pharmacology, University of Michigan Medical Center, Ann Arbor, Michigan;