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Submitted on: 15 March 2020.
Revised on: 29 May 2020.
Accepted on: 18 June 2020.
___________________British Journal of Pain---SAGE PUBLICATIONS LTD
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Submitted on: 11 May 2023.
Revised on: 02 September 2023.
Accepted on: 17 October 2023.
___________________British Journal of Pain---SAGE PUBLICATIONS LTD
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