Yu, Hong
Qiu, Xiang
Zhang, Yu-qing
Deng, Yan
He, Mao-yuan
Zhao, Yu-ting
Zhai, Zhao-hua
Article History
Received: 25 July 2018
Accepted: 13 November 2018
First Online: 12 January 2019
Compliance with ethical standards
:
: No funding was received for this study.
: The authors declare that there is no conflict of interest.
: All procedures performed in the 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.
: Informed consent was obtained from all individual participants included in the study.