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http://reply.papertrans.cn/2/148/14800/14800-23.png
Submitted on: 06 July 2017.
Revised on: 09 September 2017.
Accepted on: 18 October 2017.
___________________JAMA Health Forum---AMER MEDICAL ASSOC
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http://reply.papertrans.cn/2/148/14800/14800-26.png
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http://reply.papertrans.cn/2/148/14800/14800-28.png
Submitted on: 11 February 2018.
Revised on: 10 April 2018.
Accepted on: 30 April 2018.
___________________JAMA Health Forum---AMER MEDICAL ASSOC
http://reply.papertrans.cn/2/148/14800/14800-30.png