Gerasopoulos, E. [P:(DE-HGF)0] ; Kazadzis, S. [P:(DE-HGF)0] ; Vrekoussis, M. [P:(DE-HGF)0] ; Kouvarakis, G. [P:(DE-HGF)0] ; Liakakou, E. [P:(DE-HGF)0] ; Kouremeti, N. [P:(DE-HGF)0] ; Giannadaki, D. [P:(DE-HGF)0] ; Kanakidou, M. [P:(DE-HGF)0] ; Bohn, Birger [P:(DE-Juel1)2693] ; Mihalopoulos, N. [P:(DE-HGF)0]