Age-related reoperation rate after the Ross procedure: a report from the German Ross Registry

Doreen Richardt, Wolfgang Hemmer, Anton Moritz, Roland Hetzer, Armin Gorski, Ulrich F.W. Franke, Jürgen Hörer, Rüdiger Lange, Jörg S. Sachweh, Arlindo Riso, Ali Dodge-Khatami, Michael Hübler, Efstratios I. Charitos, Ulrich Stierle, Hans Hinrich Sievers