Boutachkov, P. [P:(DE-HGF)0] ; Gregor, E. [P:(DE-Ds200)OR2978] ; Pietralla, N. [P:(DE-HGF)0] ; Kojouharov, I. [P:(DE-Ds200)OR0614] ; Koenig, W. [P:(DE-Ds200)OR0613] ; Pfeiffer, M. [P:(DE-HGF)0] ; Cappellazzo, M. [P:(DE-HGF)0] ; Müller-Gatermann, C. [P:(DE-HGF)0] ; Jolie, J. [P:(DE-HGF)0]