1. From the Hypertension and Vascular Research Center (M.N., H.A.S., D.C.d.L., K.d., M.C.C., D.I.D) and Departments of General Surgery (M.C.C., D.I.D.) and Obstetrics and Gynecology (H.A.S.), Wake Forest University School of Medicine, Winston-Salem, NC; Department of Physiology and Biophysics, Federal University of Minas Gerasis, Belo Horizonte, Brazil (D.C.d.L.).