Submitted on: 30 December 2013.
Revised on: 25 February 2014.
Accepted on: 15 March 2014.
___________________Journal of Korean Neurosurgical Society
Submitted on: 03 September 2005.
Revised on: 22 October 2005.
Accepted on: 05 November 2005.
___________________Journal of Korean Neurosurgical Society
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Submitted on: 06 January 2008.
Revised on: 17 February 2008.
Accepted on: 18 March 2008.
___________________Journal of Korean Neurosurgical Society
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Submitted on: 14 October 1999.
Revised on: 06 November 1999.
Accepted on: 03 December 1999.
___________________Journal of Korean Neurosurgical Society
Submitted on: 30 October 2011.
Revised on: 23 November 2011.
Accepted on: 17 January 2012.
___________________Journal of Korean Neurosurgical Society
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