http://reply.papertrans.cn/1/40/3908/3908-11.png
http://reply.papertrans.cn/1/40/3908/3908-12.png
http://reply.papertrans.cn/1/40/3908/3908-13.png
Submitted on: 09 December 2014.
Revised on: 01 March 2015.
Accepted on: 06 April 2015.
___________________BMC MUSCULOSKELETAL DISORDERS---BMC
http://reply.papertrans.cn/1/40/3908/3908-15.png
http://reply.papertrans.cn/1/40/3908/3908-16.png
Submitted on: 27 May 2021.
Revised on: 27 August 2021.
Accepted on: 18 September 2021.
___________________BMC MUSCULOSKELETAL DISORDERS---BMC
Submitted on: 13 October 2012.
Revised on: 04 February 2013.
Accepted on: 17 March 2013.
___________________BMC MUSCULOSKELETAL DISORDERS---BMC
http://reply.papertrans.cn/1/40/3908/3908-19.png
http://reply.papertrans.cn/1/40/3908/3908-20.png