Submitted on: 12 November 1998.
Revised on: 12 February 1999.
Accepted on: 23 March 1999.
___________________Global & Regional Health Technology Assessment
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Submitted on: 04 June 2011.
Revised on: 12 August 2011.
Accepted on: 26 August 2011.
___________________Global & Regional Health Technology Assessment
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Submitted on: 15 September 2012.
Revised on: 19 November 2012.
Accepted on: 14 January 2013.
___________________Global & Regional Health Technology Assessment