∗Department of Neurosurgery, Hanyang University Guri Hospital, Guri, Gyonggi-do, Korea
†Department of Neurosurgery, Hanyang University Medical Center, Wangsimni-ro, Seongdong-gu, Seoul, Korea
‡Department of Rheumatology, Hospital for Rheumatic Diseases, Hanyang University Medical Center, Wangsimni-ro, Seongdong-gu, Seoul, Korea
§Department of Neurosurgery, Asan Medical Center, Olympic-ro, Songpa-gu, Seoul, Korea.
Address correspondence and reprint requests to Je Il Ryu, MD, PhD, Department of Neurosurgery, Hanyang University Guri Hospital, 153 Gyeongchun-ro, Guri 471-701, Gyonggi-do, Korea; E-mail: [email protected]
Received 22 August, 2016
Revised 19 September, 2016
Accepted 26 September, 2016
The manuscript submitted does not contain information about medical device (s)/drug(s).
No funds were received in support of this work.
No relevant financial activities outside the submitted work.
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