Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway

Institute for Surgical Research (J.G., M.S.A., I.T.M., E.M.V.H., H.A.) and Departments of Cardiology (H.A., T.E.) and Pharmacology (E.Q., K.K., F.O.L., J.-B.O., T.S.), Oslo University Hospital and University of Oslo, Oslo, Norway; and Center for Heart Failure Research (J.G., M.S.A., E.Q., K.K., T.E., I.T.M., E.M.V.H., G.V., F.O.L., J.-B.O., T.S., H.A.), K. G. Jebsen Cardiac Research Centre (E.Q., K.K., F.O.L., J.-B.O., T.S.), and Department of Physiology (J.S., G.V.), University of Oslo, Oslo, Norway