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Submitted on: 02 August 1998.
Revised on: 01 September 1998.
Accepted on: 02 October 1998.
___________________Journal of Adolescent Health---ELSEVIER SCIENCE INC
Submitted on: 10 February 2017.
Revised on: 20 May 2017.
Accepted on: 10 July 2017.
___________________Journal of Adolescent Health---ELSEVIER SCIENCE INC
Submitted on: 12 February 2005.
Revised on: 01 May 2005.
Accepted on: 19 June 2005.
___________________Journal of Adolescent Health---ELSEVIER SCIENCE INC
Submitted on: 19 August 1998.
Revised on: 21 November 1998.
Accepted on: 04 January 1999.
___________________Journal of Adolescent Health---ELSEVIER SCIENCE INC
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Submitted on: 30 May 1998.
Revised on: 24 July 1998.
Accepted on: 25 August 1998.
___________________Journal of Adolescent Health---ELSEVIER SCIENCE INC