Ritter, Christian [P:(DE-Juel1)156467] ; Förster, Dominik [P:(DE-HGF)0] ; Albrecht, Philipp [P:(DE-HGF)0] ; Hartung, Hans-Peter [P:(DE-HGF)0] ; Kieseier, Bernd C. [P:(DE-HGF)0] ; Lehmann, Helmar C. [P:(DE-HGF)0]