- Head department pathology and cytology Aachen (Germany) University of Technology, 1982-1994. Director institute cytopathology University Düsseldorf (Germany), since 1994.
Fellow International Academy Cytology. Member European Society Analytical Cellular Pathology (president 1994-1997), German Society Pathology (speaker working group cytopathology since 1995), International Academy Pathology (executive board German division 1994-1997, education committee since 1994), International Society Analytical Cytology, International Physicians for Prevention of Nuclear War, German Pathologists Professional Association (executive board since 2001).
1982 - 1994