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Submitted on: 24 September 2000.
Revised on: 14 December 2000.
Accepted on: 12 January 2001.
___________________Journal of Maternal-Fetal & Neonatal Medicine
Submitted on: 28 January 2005.
Revised on: 17 May 2005.
Accepted on: 18 June 2005.
___________________Journal of Maternal-Fetal & Neonatal Medicine
Submitted on: 06 August 2016.
Revised on: 22 November 2016.
Accepted on: 16 January 2017.
___________________Journal of Maternal-Fetal & Neonatal Medicine
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