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Submitted on: 08 July 1999.
Revised on: 16 October 1999.
Accepted on: 04 December 1999.
___________________JOURNAL OF DEVELOPMENTAL AND BEHAVIORAL PEDIATRICS
Submitted on: 17 February 2009.
Revised on: 04 May 2009.
Accepted on: 29 June 2009.
___________________JOURNAL OF DEVELOPMENTAL AND BEHAVIORAL PEDIATRICS
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Submitted on: 01 January 2011.
Revised on: 25 April 2011.
Accepted on: 06 May 2011.
___________________JOURNAL OF DEVELOPMENTAL AND BEHAVIORAL PEDIATRICS
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Submitted on: 04 August 2001.
Revised on: 30 October 2001.
Accepted on: 25 December 2001.
___________________JOURNAL OF DEVELOPMENTAL AND BEHAVIORAL PEDIATRICS