1. From University of Utah School of Medicine, Salt Lake City, Utah; Wake Forest School of Medicine, Winston-Salem, North Carolina; University of Texas Southwestern Medical Center, Dallas, Texas; Ohio State University, Columbus, Ohio; University of Pennsylvania, Philadelphia, Pennsylvania; University of Minnesota, Minneapolis, Minnesota; National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; University of Illinois at Chicago, Chicago, Illinois;
2. VA Medical Center, Washington, DC; Case Western Reserve University, Cleveland, Ohio; University of California, Los Angeles, Los Angeles, California; VA Medical Center, Albuquerque, New Mexico; VA Medical Center, Memphis, Tennessee; and Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana.