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Submitted on: 18 May 2011.
Revised on: 30 July 2011.
Accepted on: 23 August 2011.
___________________JFR-Journal of Family Research
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Submitted on: 25 June 2002.
Revised on: 12 September 2002.
Accepted on: 07 October 2002.
___________________JFR-Journal of Family Research
Submitted on: 16 December 2003.
Revised on: 20 January 2004.
Accepted on: 15 March 2004.
___________________JFR-Journal of Family Research
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