Submitted on: 10 October 2007.
Revised on: 04 November 2007.
Accepted on: 30 November 2007.
___________________BMC Endocrine Disorders---BMC
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Submitted on: 16 August 2000.
Revised on: 24 November 2000.
Accepted on: 31 December 2000.
___________________BMC Endocrine Disorders---BMC
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Submitted on: 12 July 1998.
Revised on: 14 October 1998.
Accepted on: 24 November 1998.
___________________BMC Endocrine Disorders---BMC
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Submitted on: 16 September 1998.
Revised on: 08 January 1999.
Accepted on: 26 February 1999.
___________________BMC Endocrine Disorders---BMC
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