1. From the Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany (H.S., R.O., M.L., A.H., U.B., J.v.F., D.D., T.K., K.C.W., B.S., K.G.); Department of Pediatrics, Center for Liver, Digestive, and Metabolic Diseases, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands (W.A., U.J.F.T.); CONARIS Research Institute AG, Kiel, Germany (G.H.W., D.S.); Institute of Biochemistry, Christian-Albrechts-University, Kiel, Germany (S.R.-J.).