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Submitted on: 03 March 2018.
Revised on: 15 April 2018.
Accepted on: 18 May 2018.
___________________Journal of Patient-Reported Outcomes
Submitted on: 02 August 1998.
Revised on: 08 October 1998.
Accepted on: 03 December 1998.
___________________Journal of Patient-Reported Outcomes
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Submitted on: 02 September 2002.
Revised on: 06 December 2002.
Accepted on: 19 December 2002.
___________________Journal of Patient-Reported Outcomes
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Submitted on: 29 August 1998.
Revised on: 08 November 1998.
Accepted on: 24 December 1998.
___________________Journal of Patient-Reported Outcomes