| Year | Position | Institution |
| 1974 | Population Council 4 | |
| 1974 | Associatedirector | Population Council Rockefeller University 4 |
| 1977 | Senior Scientist | Population Council Rockefeller University 4 |
| 1978 | Senior Scientist | Biomedical Division Population Council 4 |
| 1979 | Population Council Rockefeller University 4 | |
| 1980 | Rockefeller University 4 | |
| 1981 | Rockefeller University 4 | |
| 1982 | Population Council 4 | |
| 1983 | Rockefeller Foundation 4 | |
| 1984 | Rockefeller Foundation 8 | |
| 1985 | Population Council Rockefeller University 4 | |
| 1986 | Population Council 4 | |
| 1987 | Population Council Rockefeller University 4 | |
| 1988 | Population Council 4 | |
| 1989 | Population Council Cbr 4 | |
| 1990 | Population Council 4 | |
| 1992 | Population Council 4 | |
| 1993 | Population Council 4 |
| Year | Role | Course |
| 1974 | Instructor | Fertilization And Gamete Physiology Research Training Program 1974 |
| 1984 | Faculty/Staff/Lecturer | Microbiology 1984 |
| Year | Subject | Role |
| 1974 | Independent | |
| 1977 | Independent | |
| 1978 | Independent | |
| 1979 | Independent | |
| 1980 | Independent | |
| 1981 | Other Research Personnel | |
| 1982 | Other Research Personnel | |
| 1983 | Other Research Personnel | |
| 1984 | Other Research Personnel | |
| 1985 | Other Research Personnel | |
| 1986 | Other Research Personnel | |
| 1987 | Other Research Personnel | |
| 1988 | Other Research Personnel | |
| 1989 | Other Research Personnel | |
| 1990 | Other Research Personnel | |
| 1992 | Principal Investigators | |
| 1993 | Pricipal Investigators |