Henschel, Hans [P:(DE-HGF)0] ; Köhn, O. [P:(DE-HGF)0] ; Koerfer, Markus [P:(DE-H253)PIP1002253] ; Stegmann, T. [P:(DE-HGF)0] ; Wittenburg, Kay [P:(DE-H253)PIP1003055] ; Wulf, F. [P:(DE-HGF)0]