, Dong Ah Shin3
, Jin Hoon Park4
, Miyoung Choi5
, Hyung-Youl Park6
, In Soo Kim7
, Jung-Kil Lee8
, Chung-Kee Chough9
, Seung Hwan Yoon10
, Seong-Soo Choi11
, Sung-Woo Choi12
, The Korean Pain Society, The Korean Spinal Pain Society, The Korean Spinal Neurosurgery Society1Department of Neurosurgery, Sungkyunkwan University Kangbuk Samsung Hospital, Sungkyunkwan University College of Medicine, Seoul, Korea JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/