Tang, Shilong
Liu, Xianfan
He, Ling
Zhou, Yu
Cheng, Zhuo
Article History
Received: 20 May 2018
Accepted: 20 December 2018
First Online: 17 January 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 article does not contain any studies with human participants or animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.