1. Principal Scientist.
2. Scientist.
3. Professor.
4. Professor, Max-Delbrück-Center for Molecular Medicine, Berlin, Germany.
5. Current position: Professor, Campus Virchow Klinikum, Charité-Universitätsmedizin, Berlin, Germany.
6. Chair, Klinik für Anaesthesiologie und Operative Intensivmedizin, Campus Benjamin Franklin, Berlin, Germany.