Laakso, L. [P:(DE-HGF)0] ; Anttila, T. [P:(DE-Juel1)VDB45939] ; Lehtinen, K. [P:(DE-HGF)0] ; Aalto, P. [P:(DE-HGF)0] ; Kulmala, M. [P:(DE-HGF)0] ; Horrak, U. [P:(DE-HGF)0] ; Paatero, J. [P:(DE-HGF)0] ; Hanke, M. [P:(DE-HGF)0] ; Arnold, F. [P:(DE-HGF)0]