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Submitted on: 18 January 2005.
Revised on: 03 April 2005.
Accepted on: 09 May 2005.
___________________BMC Family Practice
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Submitted on: 20 April 2006.
Revised on: 12 July 2006.
Accepted on: 11 August 2006.
___________________BMC Family Practice
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Submitted on: 27 July 2006.
Revised on: 23 October 2006.
Accepted on: 10 December 2006.
___________________BMC Family Practice
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Submitted on: 02 June 2017.
Revised on: 30 July 2017.
Accepted on: 25 September 2017.
___________________BMC Family Practice