Volkmann, J. [P:(DE-HGF)0] ; Allert, N. [P:(DE-HGF)0] ; Voges, J. [P:(DE-HGF)0] ; Weiss, P. H. [P:(DE-Juel1)131748] ; Freund, H. J. [P:(DE-HGF)0] ; Sturm, V. [P:(DE-HGF)0]