Zhang, Zhipeng
Shi, Di
Zhang, Qiang
Wang, Si
Liu, Kai
Meng, Qingtao
Chen, Xiaoping
Article History
Received: 9 January 2018
Accepted: 16 March 2018
First Online: 22 March 2018
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: All patients participated in the study have read and signed the informed consent.