Dutta, S. [P:(DE-HGF)0] ; Hartkopf-Fröder, C. [P:(DE-HGF)0] ; Mann, U. [P:(DE-Juel1)VDB1006] ; Wilkes, H. [P:(DE-HGF)0] ; Brocke, R. [P:(DE-HGF)0] ; Bertram, N. [P:(DE-HGF)0]