Zeng, Feng
Luo, Gang
Lu, Yamei
Zhang, Zhaotian
Zhou, Yuanqing
Chen, Yonging
Zhou, Zhiyan
Article History
Received: 19 August 2019
Accepted: 11 April 2020
First Online: 23 May 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Ethical approval was obtained from the Ethics Committee of The Sixth Affiliated Hospital of Guangzhou Medical University. 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.
: Informed consent was obtained from all individual participants included in the study.