Submitted on: 10 April 2004.
Revised on: 03 May 2004.
Accepted on: 29 May 2004.
___________________Health Research Policy and Systems
Submitted on: 31 August 2023.
Revised on: 19 November 2023.
Accepted on: 13 December 2023.
___________________Health Research Policy and Systems
Submitted on: 25 March 2024.
Revised on: 27 May 2024.
Accepted on: 03 July 2024.
___________________Health Research Policy and Systems
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Submitted on: 21 September 2008.
Revised on: 02 December 2008.
Accepted on: 11 January 2009.
___________________Health Research Policy and Systems
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