http://reply.papertrans.cn/2/184/18308/18308-31.png
Submitted on: 21 October 1998.
Revised on: 01 January 1999.
Accepted on: 23 February 1999.
___________________Journal of Neurosurgery-Pediatrics
Submitted on: 17 June 2002.
Revised on: 06 August 2002.
Accepted on: 04 October 2002.
___________________Journal of Neurosurgery-Pediatrics
http://reply.papertrans.cn/2/184/18308/18308-34.png
http://reply.papertrans.cn/2/184/18308/18308-35.png
Submitted on: 03 December 2002.
Revised on: 11 March 2003.
Accepted on: 22 April 2003.
___________________Journal of Neurosurgery-Pediatrics