From the Jefferson Headache Center/Thomas Jefferson University Hospital, Philadelphia, PA.
Copyright © 2000 by AAN Enterprises, Inc.
Received February 7, 2000.
Accepted in final form April 26, 2000.
Address correspondence and reprint requests to Dr. Todd D. Rozen, Jefferson Headache Center, 111 South 11th Street, Suite 8130, Philadelphia, PA 19107; e-mail: [email protected]
