Submitted on: 14 July 2014.
Revised on: 07 August 2014.
Accepted on: 14 September 2014.
___________________JOURNAL OF HEALTH ECONOMICS---ELSEVIER
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Submitted on: 26 July 2014.
Revised on: 26 August 2014.
Accepted on: 23 October 2014.
___________________JOURNAL OF HEALTH ECONOMICS---ELSEVIER
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Submitted on: 20 May 2015.
Revised on: 08 August 2015.
Accepted on: 02 October 2015.
___________________JOURNAL OF HEALTH ECONOMICS---ELSEVIER
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