1. From Cardiovascular Research (J.S., M.H., H.G., T.F.L., F.C.T.), Physiology Institute, University of Zürich; Cardiology, Cardiovascular Center (J.S., M.H., T.F.L., F.R., F.C.T.) and Center for Experimental Rheumatology (S.G.), University Hospital Zürich, Zürich, Switzerland.