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Submitted on: 19 May 2004.
Revised on: 10 September 2004.
Accepted on: 30 October 2004.
___________________BEST PRACTICE & RESEARCH CLINICAL OBSTETRICS & GYNAECOLOGY
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Submitted on: 28 September 2008.
Revised on: 21 January 2009.
Accepted on: 12 March 2009.
___________________BEST PRACTICE & RESEARCH CLINICAL OBSTETRICS & GYNAECOLOGY
Submitted on: 06 April 2003.
Revised on: 05 July 2003.
Accepted on: 31 July 2003.
___________________BEST PRACTICE & RESEARCH CLINICAL OBSTETRICS & GYNAECOLOGY
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