1. Research Service (E.P.G.-S., A.F.d.R., C.E.G.-S.), University of Mississippi Medical Center, Jackson, Mississippi 39216
2. G.V. (Sonny) Montgomery Veterans Affairs Medical Center, Division of Endocrinology (E.P.G.-S., D.G.R., A.F.d.R., M.P.W., C.E.G.-S.), University of Mississippi Medical Center, Jackson, Mississippi 39216
3. Laboratories of Molecular Hypertension (Z.K.), Baker Medical Research Institute, Melbourne, Victoria 8008, Australia