[1] Univ Zurich Hosp, Clin Endocrinol, Dept Gynecol & Obstet, CH-8051 Zurich, Switzerland
[2] Univ Pittsburgh, Med Ctr, Ctr Clin Pharmacol, Pittsburgh, PA 15213 USA
[3] Univ Pittsburgh, Med Ctr, Dept Med, Pittsburgh, PA 15213 USA
[4] Univ Pittsburgh, Med Ctr, Dept Pharmacol, Pittsburgh, PA 15213 USA
[5] Univ Alabama Birmingham, Vasc Biol & Hypertens Program, Birmingham, AL 35294 USA