Wu, Ya-Qiu
Li, Li-Zhi
Wang, Zhen-Yu
Zhang, Tian
Xu, Min
Cheng, Mei-Xiong
Article History
Received: 15 September 2019
Accepted: 3 February 2020
First Online: 21 February 2020
Compliance with ethical guidelines
:
: Y.-Q. Wu, L.-Z. Li, Z.-Y. Wang, T. Zhang, M. Xu and M.-X. Cheng declare that they have no competing interests.
: 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.