1. From Institute of Sports and Preventive Medicine, Saarland University, Saarbrücken, Germany (P.B., L.L., N.K., W.K., T.M., J.S.); Clinic of Diagnostic and Interventional Radiology, Saarland University Medical Center, Homburg, Germany (G.S.); and Clinic of Pediatric Cardiology, Saarland University Medical Center, Homburg, Germany (A.R., H.A.-K.).