Gerhard-Paul Diller1, Helmut Baumgartner2. 1. Division of Adult Congenital and Valvular Heart Disease, Department of Cardiovascular Medicine University Hospital of Münster, Münster, Germany. gerhard.diller@ukmuenster.de. 2. Division of Adult Congenital and Valvular Heart Disease, Department of Cardiovascular Medicine University Hospital of Münster, Münster, Germany.