Funding for this research was provided by:
the National Natural Science Foundation of China (No. 81572273, No. 81602015)
Clinical Science and Technology Project of Jiangsu Province (No. BL2013026)
Article History
Received: 26 October 2017
Accepted: 22 January 2018
First Online: 19 February 2018
Compliance with ethical standards
:
: The authors declare no conflicts of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.