Li, X. [P:(DE-HGF)0] ; Spatschek, Robert [P:(DE-Juel1)130979] ; F. Bottler [P:(DE-HGF)0] ; Schmitt, A. [P:(DE-HGF)0] ; Heilmaier, M. [P:(DE-HGF)0] ; Stein, F. [P:(DE-HGF)0]