1. From the Division of Cardiology (C.E.C., I.R., B.F., B.R.K.) and Department of Pediatrics (K.E.L.S., M.Z.R.S., M.B., B.F., T.D., M.C.), Geneva University Hospitals and University of Geneva, Geneva, Switzerland; Department of Medical Physiology, University Medical Center Utrecht, Utrecht, the Netherlands (T.A.B.v.V., M.J.A.v.K., F.E.J.C., H.J.J.); Institut für Physiologie, Universität zu Lübeck, Lübeck, Germany (C.d.W.); Division of Physiology, University of Fribourg, Fribourg, Switzerland (Z.Y.,...