Five years later , Beisiegel qualified as a level C - 4 professor .
Five years later , Beisiegel became director of the Institute of Biochemistry and Molecular Biology at the University Medical Center Hamburg - Eppendorf .
Five years later , Beisiegel qualified as a level C - 4 professor and became director of the Institute of Biochemistry and Molecular Biology at the University Medical Center Hamburg - Eppendorf .