Goethe University Frankfurt, Goethe University Frankfurt, Goethe University Frankfurt - Department of Sports Medicine, University of Vechta, University of Hamburg, University of Stuttgart, Karlsruhe Institute of Technology, Paderborn University, University of Stuttgart, University of Stuttgart, University of Münster, Robert Bosch Hospital, University of Stuttgart, Paderborn University, Goethe University Frankfurt - Department of Sports Medicine, Chemnitz University of Technology, University of Münster and German Sport University Cologne