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Submitted on: 19 June 1998.
Revised on: 11 October 1998.
Accepted on: 03 November 1998.
___________________JAMA Health Forum---AMER MEDICAL ASSOC
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Submitted on: 01 June 2005.
Revised on: 20 July 2005.
Accepted on: 08 September 2005.
___________________JAMA Health Forum---AMER MEDICAL ASSOC
Submitted on: 29 March 2009.
Revised on: 06 June 2009.
Accepted on: 06 July 2009.
___________________JAMA Health Forum---AMER MEDICAL ASSOC
Submitted on: 01 December 2021.
Revised on: 21 February 2022.
Accepted on: 11 March 2022.
___________________JAMA Health Forum---AMER MEDICAL ASSOC
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Submitted on: 26 May 2006.
Revised on: 23 June 2006.
Accepted on: 19 July 2006.
___________________JAMA Health Forum---AMER MEDICAL ASSOC
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