Submitted on: 13 August 2000.
Revised on: 24 November 2000.
Accepted on: 23 December 2000.
___________________Current Tropical Medicine Reports
Submitted on: 19 January 2001.
Revised on: 15 April 2001.
Accepted on: 30 May 2001.
___________________Current Tropical Medicine Reports
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Submitted on: 04 January 1999.
Revised on: 15 February 1999.
Accepted on: 22 March 1999.
___________________Current Tropical Medicine Reports
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Submitted on: 06 March 2004.
Revised on: 23 April 2004.
Accepted on: 07 June 2004.
___________________Current Tropical Medicine Reports
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Submitted on: 01 January 2006.
Revised on: 11 April 2006.
Accepted on: 07 May 2006.
___________________Current Tropical Medicine Reports
Submitted on: 12 November 2004.
Revised on: 05 February 2005.
Accepted on: 01 April 2005.
___________________Current Tropical Medicine Reports