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Submitted on: 04 March 2010.
Revised on: 31 May 2010.
Accepted on: 13 July 2010.
___________________BMC MUSCULOSKELETAL DISORDERS---BMC
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Submitted on: 23 May 2000.
Revised on: 07 August 2000.
Accepted on: 11 September 2000.
___________________BMC MUSCULOSKELETAL DISORDERS---BMC
Submitted on: 21 October 2019.
Revised on: 06 February 2020.
Accepted on: 03 March 2020.
___________________BMC MUSCULOSKELETAL DISORDERS---BMC
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Submitted on: 01 October 2020.
Revised on: 11 January 2021.
Accepted on: 26 February 2021.
___________________BMC MUSCULOSKELETAL DISORDERS---BMC