- 1971[subject unknown]Independent
- 1972[subject unknown]Independent
- 1973[subject unknown]Independent
- 1975[subject unknown]Independent
- 1977[subject unknown]Independent
- 1988[subject unknown]Other Research Personnel
- 1974[subject unknown]Corporation Member
- 1975[subject unknown]Corporation Member
- 1976[subject unknown]Corporation Member
- 1977[subject unknown]Corporation Member
- 1978[subject unknown]Corporation Member
- 1979[subject unknown]Corporation Member
- 1980[subject unknown]Corporation Member
- 1981[subject unknown]Corporation Member
- 1982[subject unknown]Corporation Member
- 1983[subject unknown]Corporation Member
- 1984[subject unknown]Corporation Member
- 1985[subject unknown]Corporation Member