Funding for this research was provided by:
National Natural Science Foundation of China (81502535)
China Postdoctoral Science Foundation (2017M622739)
Natural Science Foundation of Guangdong Province (2015A030310039)
the Pearl River S&T Nova Program of Guangzhou (201806010104)
the SCORE foundation (Y-MX2015-099)
the Special Founfation for National Clinical Specialties of China
Received: 5 February 2018
Accepted: 19 April 2018
First Online: 2 May 2018
Ethics approval and consent to participate
: This study was approved by the Nanfang Hospital Ethics Review Board.
: The authors declare that they have no competing interests.
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