1. Department of Cardiovascular Medicine, Institute for Genetics of Heart Diseases (IfGH), University Hospital Münster, Germany (J.K., B.S., S.Z., G.S., E.S.-B.).
2. Institute of Physiology and Pathophysiology, Vegetative Physiology, University of Marburg, Germany (M.G., S.R., N.D.).
3. Department of Pediatric Cardiology, University Children’s Hospital Vienna, Austria (C.P.).
4. Department of Cardiovascular Medicine, Institute of Physiology, Ruhr-University Bochum, Germany (L.P., M.-C.K.).