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Submitted on: 15 July 2007.
Revised on: 13 September 2007.
Accepted on: 21 October 2007.
___________________Journal of Perinatology---SPRINGERNATURE
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Submitted on: 30 August 2008.
Revised on: 30 November 2008.
Accepted on: 07 January 2009.
___________________Journal of Perinatology---SPRINGERNATURE
Submitted on: 24 March 2003.
Revised on: 13 July 2003.
Accepted on: 02 August 2003.
___________________Journal of Perinatology---SPRINGERNATURE
Submitted on: 27 May 2013.
Revised on: 13 August 2013.
Accepted on: 26 August 2013.
___________________Journal of Perinatology---SPRINGERNATURE
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