American College of Surgery Clinical Congress, October 10-15 1999

American Public Health Association (APHA), Annual Meeting, November 17, 1998

American Society of Clinical Oncology (ASCO), Annual Meeting, May 16-19, 1998

American Society of Hematology (ASH) Meeting, December 5-9, 1997

European Cancer Conference, September 14-18, 1997, Hamburg Germany