1. From the Department of Medicine (D.C., D.W.J.), University of Mississippi Medical Center, Jackson
2. Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences (A.F.D.), University of Glasgow, United Kingdom
3. Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre (R.M.T.), University of Glasgow, United Kingdom
4. Endocrinology Diabetes and Metabolism Division, CHU Vaudois, Lausanne, Switzerland (M.B.)
5. Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic College of Medicine, MN (Z.Z.).
6. Department of Physiology and Biophysics (D.W.J.), University of Mississippi Medical Center, Jackson