Schmidt, D. [P:(DE-HGF)0] ; Gottwald, U. [P:(DE-HGF)0] ; Langen, K. J. [P:(DE-Juel1)131777] ; Weber, A. [P:(DE-HGF)0] ; Hertel, A. [P:(DE-HGF)0] ; Felsberg, J. [P:(DE-HGF)0] ; Müller-Gärtner, H. W. [P:(DE-HGF)0]