Heckmann, A [P:(DE-HGF)0] ; Thienenkamp, J [P:(DE-HGF)0] ; Beltrop, K [P:(DE-HGF)0] ; Winter, Martin [P:(DE-Juel1)166130] ; Brunklaus, Gunther [P:(DE-Juel1)172047] ; Placke, T [P:(DE-HGF)0]