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Submitted on: 25 September 2021.
Revised on: 25 December 2021.
Accepted on: 07 January 2022.
___________________JOURNAL OF HEALTH ECONOMICS---ELSEVIER
Submitted on: 18 August 2003.
Revised on: 05 October 2003.
Accepted on: 03 November 2003.
___________________JOURNAL OF HEALTH ECONOMICS---ELSEVIER
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Submitted on: 19 February 2006.
Revised on: 25 March 2006.
Accepted on: 01 May 2006.
___________________JOURNAL OF HEALTH ECONOMICS---ELSEVIER
Submitted on: 22 June 2013.
Revised on: 11 September 2013.
Accepted on: 25 October 2013.
___________________JOURNAL OF HEALTH ECONOMICS---ELSEVIER