1. Division of Endocrinology (T.P.J., J.P.B.), Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, New York 10032
2. Department of Biomedical and Molecular Sciences (M.K., G.J.), Queen's University, Kingston, Ontario, Canada K7L 3N6
3. Nephology Research (R.K.), Departments of Medicine, Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota 55902
4. Department of General Pediatrics (K.-P.S.), University Children's Hospital, 48129 Munster, Germany
5. School of Environmental and Biological Sciences (S.S.), Rutgers University, New Brunswick, New Jersey 08901