1. From the Division of Angiology, Department of Medicine, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland (R.P.E., A.A.); Clinic for Angiology, Swiss Cardiovascular Center, Inselspital, University Hospital and University of Bern, Switzerland (R.P.E., T.W., D.-D.D., I.B., N.K.); and Institute of Pharmacology, University of Bern, Switzerland (D.S.).