Wang, Qian http://orcid.org/0000-0002-7814-2581
Zheng, Sheng-Xing
Ni, Yu-Fei
Lu, Yuan-Yuan
Zhang, Bing
Lian, Qing-Quan
Hu, Ming-Pin
Article History
Received: 3 August 2017
Accepted: 19 April 2018
First Online: 18 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.