Chai, Weimin
You, Chao
Zhang, Weifeng
Peng, Wen
Tan, Ling
Guan, Yongjing
Chen, Kemin
Article History
Received: 22 May 2018
Accepted: 13 February 2019
First Online: 8 May 2019
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.
: This study was approved by the institutional review board.