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http://reply.papertrans.cn/1/39/3882/3882-32.png
Submitted on: 29 September 2016.
Revised on: 31 October 2016.
Accepted on: 12 December 2016.
___________________BMC Family Practice
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Submitted on: 27 July 2016.
Revised on: 17 August 2016.
Accepted on: 27 August 2016.
___________________BMC Family Practice
Submitted on: 20 April 2017.
Revised on: 31 May 2017.
Accepted on: 27 June 2017.
___________________BMC Family Practice