Vanson, J. A. M. [P:(DE-HGF)0] ; Vincent, J. G. [P:(DE-HGF)0] ; Lacquet, L. K. [P:(DE-HGF)0] ; Steinseifer, Ulrich [P:(DE-HGF)0] ; Reul, Helmut [P:(DE-HGF)0] ; Knott, E. [P:(DE-HGF)0]