Petzold, A. [P:(DE-HGF)0] ; Ibrahim, A. [P:(DE-HGF)0] ; Franke, H. [P:(DE-HGF)0] ; Klaus, Ch. [P:(DE-HGF)0] ; Herrmann, M. [P:(DE-HGF)0] ; Fiebig, M. [P:(DE-HGF)0] ; Volz-Thomas, A. [P:(DE-Juel1)6742]