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Submitted on: 09 July 2005.
Revised on: 30 October 2005.
Accepted on: 22 December 2005.
___________________JOURNAL OF HEALTH ECONOMICS---ELSEVIER
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Submitted on: 10 November 2018.
Revised on: 29 December 2018.
Accepted on: 25 January 2019.
___________________JOURNAL OF HEALTH ECONOMICS---ELSEVIER
Submitted on: 07 January 2007.
Revised on: 17 March 2007.
Accepted on: 01 April 2007.
___________________JOURNAL OF HEALTH ECONOMICS---ELSEVIER
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Submitted on: 01 October 2017.
Revised on: 28 October 2017.
Accepted on: 01 December 2017.
___________________JOURNAL OF HEALTH ECONOMICS---ELSEVIER