Diploma, Medical Institute, Charkov, Ukraine, 1967. Doctor of Medicine, Medical Academy, Magdeburg, Germany, 1970. Doctor in Medical Science habilitation (honorary), Academy for Further Medical Qualification, Berlin, 1981.
Medical assistant gynecology Hospital, Magdeburg, Germany, 1967—1968. Head department Municipal Authority, Berlin, 1969—1979. Science employee, head department statistics and data processing Institute Health, 1979—1990.
Head department Institute Public Health, Bielefeld, 1990—2006. Senior lecturer public health University Bielefeld, Germany, 1995—2003, professor, Germany, since 2003. Project leader European Commission, Luxembourg, 1995—2002, World Health Organization/Europe, Bielefeld, 1996—2000.
Project manager Common Minimum Indicators Set for South Eastern European Countries, 2002, Indicator Set Health Reporting in German States, 2003, 05.
Advisor public health Stability Pact for South Eastern Europe, 2000—2007. Project coordinator Metq Net. Member of Chamber Physicians, German Society for Social Medicine.
Married Klessen, June 1967 (divorced December 1989). 1 child Sylvia Klessen.