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since 1994 | Full Professor of Pharmaceutical Biology, University of Tübingen, Germany |
| 1/14 - 12/15 | Professor at the Pharmacy Department, College of Medicine, University of Malawi. Contracted by GIZ/CIM, Germany, on official leave from the University of Tübingen. |
10/10 - 3/11 | Sabbatical at the Shanghai Jiao Tong University, China |
3/05 - 9/05 | Sabbatical at the Salk Institute of Biological Studies, La Jolla, California, USA |
3/99 - 9/99 | Sabbatical at McGill University, Montreal, Canada, and at the University of Cincinnati, USA |
4/96 - 9/96 | Sabbatical at the University of Washington, Seattle, USA |
1991 - 1994 | Associate Professor of Pharmaceutical Biology, University of Freiburg, Germany |
1990 - 1991 | Heisenberg Scholar of the German Research Foundation (DFG) |
1987 - 1990 | Assistant Professor, Institute of Pharmaceutical Biology, University of Bonn, Germany |
1985 - 1987 | Postdoctoral Fellow (JSPS/Humboldt Scholar), Faculty of Pharmaceutical Sciences, Kyoto University, Japan |
3/85 - 5/85 | Consultant for the UNICEF/WHO Action Programme on Essential Drugs, Somalia, Africa |
1982 - 1985 | Senior Pharmacist Advisor, Refugee Health Unit, Ministry of Health, Somalia, Africa |
1978 - 1981 | Teaching Assistant, Institute of Pharmaceutical Biology, University of Münster, Germany |
1977 - 1978 | Pharmacy trainee in a community pharmacy, Salzgitter, Germany |
