- Full refund until December 15, 2005
- Full refund less $100 USD administrative fee from December 16, 2005 - May 15, 2006
- No refunds for presenters after March 31, 2006
- No refunds for attendees after May 15, 2006
- Abstract presenters or organized sessions participants whose abstracts are not accepted for either oral or poster presentation may get a full refund until February 28, 2006