From the *Department of Orthopaedics and Traumatology, Taipei Medical University and Hospital; and †Department of Neurosurgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
Acknowledgment date: March 13, 2009. First revision date: May 1, 2009. Second revision date: May 25, 2009. Acceptance date: May 26, 2009.
The manuscript submitted does not contain information about medical device(s)/drug(s).
No funds were received in support of this work. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this manuscript.
Address correspondence and reprint requests to Meng-Fai Kuo, Department of Neurosurgery, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei, 100, Taiwan.