1. Division of Endocrinology, Diabetes, Metabolism, Nutrition, and Internal Medicine, and
2. Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294;
3. Department of Internal Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands 6525GA;
4. Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; and
5. Endocrine Hypertension Research Centre, University of Queensland School of Medicine,
6. Greenslopes Private Hospital, and
7. Princess Alexandra Hospital, Queensland 4102, Australia
8. Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota 55905;