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Submitted on: 21 December 2003.
Revised on: 25 February 2004.
Accepted on: 21 April 2004.
___________________Journal of Neurosurgery-Pediatrics
Submitted on: 09 June 2000.
Revised on: 24 September 2000.
Accepted on: 13 October 2000.
___________________Journal of Neurosurgery-Pediatrics
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Submitted on: 20 October 2022.
Revised on: 30 December 2022.
Accepted on: 05 February 2023.
___________________Journal of Neurosurgery-Pediatrics
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