Submitted on: 17 November 1998.
Revised on: 25 January 1999.
Accepted on: 19 February 1999.
___________________ACTA NEUROCHIRURGICA---SPRINGER WIEN
Submitted on: 18 May 2009.
Revised on: 28 August 2009.
Accepted on: 10 October 2009.
___________________ACTA NEUROCHIRURGICA---SPRINGER WIEN
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Submitted on: 26 September 2005.
Revised on: 04 December 2005.
Accepted on: 18 December 2005.
___________________ACTA NEUROCHIRURGICA---SPRINGER WIEN
Submitted on: 03 October 2018.
Revised on: 25 October 2018.
Accepted on: 26 November 2018.
___________________ACTA NEUROCHIRURGICA---SPRINGER WIEN
Submitted on: 15 October 2016.
Revised on: 10 December 2016.
Accepted on: 31 December 2016.
___________________ACTA NEUROCHIRURGICA---SPRINGER WIEN
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