- 1963[subject unknown]Independent
- 1964[subject unknown]Independent
- 1965[subject unknown]Independent
- 1966[subject unknown]Independent
- 1969[subject unknown]Independent
- 1970[subject unknown]Independent
- 1971[subject unknown]Independent
- 1972[subject unknown]Independent
- 1974[subject unknown]Independent
- 1975[subject unknown]Independent
- 1977[subject unknown]Independent
- 1979[subject unknown]Independent
- 1980[subject unknown]Independent
- 1981[subject unknown]Independent
- 1982[subject unknown]Independent
- 1984[subject unknown]Independent
- 1987[subject unknown]Independent
- 1988[subject unknown]Principal Investigators
- 1989[subject unknown]Independent
- 1990[subject unknown]Principal Investigators
- 1991[subject unknown]Principal Investigators
- 1992[subject unknown]Principal Investigators
- 1993[subject unknown]Pricipal Investigators
- 1994[subject unknown]Pricinipal Investigators
- 1995[subject unknown]Pricinipal Investigators