1. Fraternal Order of Eagles Diabetes Research Center and Division of Endocrinology and Metabolism, Roy J. and Lucille A. Carver College of Medicine University of Iowa 52242 Iowa City Iowa USA
2. Fraternal Order of Eagles Diabetes Research Center and Department of Health and Human Physiology, College of Liberal Arts and Sciences University of Iowa Iowa City Iowa USA
3. Veterans Affairs Health Care System 52242 Iowa City Iowa USA