Kleffmann, J. [P:(DE-HGF)0] ; Bejan, I. [P:(DE-HGF)0] ; Abd El Aal, Y. [P:(DE-HGF)0] ; Barnes, I. [P:(DE-HGF)0] ; Benter, T. [P:(DE-HGF)0] ; Wiesen, P. [P:(DE-HGF)0] ; Bohn, B. [P:(DE-Juel1)2693]