Choe, B. J. [P:(DE-HGF)0] ; Park, K. S. [P:(DE-HGF)0] ; Labahn, J. [P:(DE-Juel1)VDB886] ; Granzin, J. [P:(DE-Juel1)131965] ; Kim, C.-J. [P:(DE-HGF)0] ; Büldt, G. [P:(DE-Juel1)131957]