- 1970[subject unknown]Independent
- 1971[subject unknown]Independent
- 1972[subject unknown]Independent
- 1973[subject unknown]Independent
- 1974[subject unknown]Independent
- 1975[subject unknown]Independent
- 1978[subject unknown]Independent
- 1979[subject unknown]Other Research Personnel
- 1988[subject unknown]Principal Investigators
- 1989[subject unknown]Independent
- 1991[subject unknown]Library Readers: General
- 1994[subject unknown]Library Readers
- 1989[subject unknown]Corporation Member
- 1990[subject unknown]Corporation Member
- 1991[subject unknown]Corporation Member
- 1992[subject unknown]Corporation Member
- 1993[subject unknown]Corporation Member
- 1994[subject unknown]Corporation Member
- 1995[subject unknown]Corporation Member
- 1996[subject unknown]Corporation Member
- 1997[subject unknown]Corporation Member
- 1998[subject unknown]Corporation Member
- 1999[subject unknown]Corporation Member
- 2000[subject unknown]Corporation Member