Advance registrants who are unable to attend the meeting may request a refund of their registration fee. Cancellations and refund requests must be submitted in writing and postmarked (or e-mailed) by December 17, 2013. Refunds will be processed less a $20 administration fee. No refunds will be issued for requests postmarked or e-mailed after December 17, 2013. Cancellations and refund requests should be submitted to: AHA Business Office, 400 A Street, SE, Washington, D.C. 20003, or e-mailed to Phu Pham. Faxed refund requests will not be accepted Proof of payment-copies of front and back of canceled check or copy of credit card statement-may be required.