| Year | Position | Institution |
| 1973 | Columbia University 4 | |
| 1974 | Graduate Student | Columbia University 4 |
| 1975 | Research Assistant | University Of Basel 4 |
| 1976 | Assistant | Biocenter University Of Basel 4 |
| 1978 | University Of Basel 4 | |
| 1988 | University Of Louisville School Of Medicine 4 | |
| 1996 | University Of Louisville 4 |
| Year | Subject | Role |
| 1973 | Research Assistants | |
| 1974 | Independent | |
| 1975 | Independent | |
| 1976 | Independent Investigators | |
| 1978 | Research Assistants | |
| 1988 | Other Research Personnel | |
| 1996 | Other Research Personnel |
| Year | Location |
| 1975 | switzerland |
| 1978 | switzerland |