Dr. Khan is a Resident, Department of Orthopaedic Surgery, the University of California, Davis, Davis, CA. Dr. Cammisa is Chief, Spinal Surgical Service, Hospital for Special Surgery, NewYork, NY. Dr. Sandhu is Associate Attending Surgeon and Director, Spine Surgery Fellowship Program, Hospital for Special Surgery, New York. Dr. Diwan is Chief and Director, Spine Service and Fellowship Program, Department of Orthopedic Surgery, St. George's Hospital, University of New South Wales, Sydney, Australia. Dr. Girardi is Assistant Attending Surgeon, Hospital for Special Surgery, New York. Dr. Lane is Attending Surgeon and Director, Metabolic Bone Disease Service, Hospital for Special Surgery, New York.
None of the following authors or the departments with which they are affiliated has received anything of value from or owns stock in a commercial company or institution related directly or indirectly to the subject of this article: Dr. Khan, Dr. Cammisa, Dr. Sandhu, Dr. Diwan, Dr. Girardi, and Dr. Lane.
Reprint requests: Dr. Sandhu, Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021.
