- 1981[subject unknown]Independent
- 1982[subject unknown]Independent
- 1986[subject unknown]Independent
- 1987[subject unknown]Independent
- 1988[subject unknown]Principal Investigators
- 1991[subject unknown]Other Research Personnel
- 1992[subject unknown]Principal Investigators
- 1993[subject unknown]Pricipal Investigators
- 1996[subject unknown]Other Research Personnel
- 1998[subject unknown]Other Research Personnel
- 1999[subject unknown]Principal Investigators
- 2000[subject unknown]Principal Investigators
- 2001[subject unknown]Principal Investigators
- 2003[subject unknown]Visiting Principal Investigators
- 2004[subject unknown]Whitman Investigators
- 2005[subject unknown]Whitman Investigators
- 2006[subject unknown]Other Research Personnel
- 2007[subject unknown]Other Research Personnel
- 2008[subject unknown]Whitman Investigators
- 2009[subject unknown]Whitman Center Investigators
- 2012[subject unknown]Investigator
- 1997[subject unknown]Corporation Member
- 1998[subject unknown]Corporation Member
- 1999[subject unknown]Corporation Member
- 2000[subject unknown]Corporation Member