Submitted on: 24 September 2002.
Revised on: 20 December 2002.
Accepted on: 05 February 2003.
___________________Journal of Korean Neurosurgical Society
http://reply.papertrans.cn/2/176/17587/17587-12.png
http://reply.papertrans.cn/2/176/17587/17587-13.png
http://reply.papertrans.cn/2/176/17587/17587-14.png
Submitted on: 07 June 2018.
Revised on: 11 September 2018.
Accepted on: 30 September 2018.
___________________Journal of Korean Neurosurgical Society
http://reply.papertrans.cn/2/176/17587/17587-16.png
http://reply.papertrans.cn/2/176/17587/17587-17.png
http://reply.papertrans.cn/2/176/17587/17587-18.png
http://reply.papertrans.cn/2/176/17587/17587-19.png
http://reply.papertrans.cn/2/176/17587/17587-20.png