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Submitted on: 21 May 2006.
Revised on: 13 August 2006.
Accepted on: 24 August 2006.
___________________Journal of Clinical Neonatology
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Submitted on: 11 July 2001.
Revised on: 02 August 2001.
Accepted on: 14 August 2001.
___________________Journal of Clinical Neonatology
Submitted on: 09 June 1998.
Revised on: 06 July 1998.
Accepted on: 15 August 1998.
___________________Journal of Clinical Neonatology
Submitted on: 10 January 2012.
Revised on: 26 April 2012.
Accepted on: 23 May 2012.
___________________Journal of Clinical Neonatology