1. Department of Internal Medicine (T.M.D.S., M.L.M., F.M.F.), Francois M. Abboud Cardiovascular Center, University of Iowa Carver College of Medicine.
2. Department of Physiology, Anatomy, and Microbiology (T.M.D.S.), School of Life Sciences, La Trobe University, Victoria, Australia.
3. Department of Neuroscience and Pharmacology (J.L.G., F.M.F.), Francois M. Abboud Cardiovascular Center, University of Iowa Carver College of Medicine.
4. Department of Physiology and Biomedical Engineering (J.L.G.), Cardiovascular Center, Neuroscience Research Center, Medical College of Wisconsin, Milwaukee.