Langner, R. [P:(DE-HGF)0] ; Kellermann, T. [P:(DE-HGF)0] ; Boers, F. [P:(DE-Juel1)VDB131] ; Sturm, W. [P:(DE-HGF)0] ; Willmes, K. [P:(DE-HGF)0] ; Eickhoff, S. B. [P:(DE-Juel1)131678]