Zhao, Jian
Lei, Junmei
Yu, Junyan
Zhang, Chengyan
Song, Xuefeng
Zhang, Ninggang
Wang, Yusheng http://orcid.org/0000-0002-9681-2876
Zhang, Suxiang
Article History
Received: 17 September 2019
Accepted: 9 October 2019
First Online: 24 October 2019
Compliance with ethical standards
:
: Jian Zhao declares that he has no conflict of interest. Junmei Lei declares that she has no conflict of interest. Junyan Yu declares that he has no conflict of interest. Chengyan Zhang declares that she has no conflict of interest. Xuefeng Song declares that she has no conflict of interest. Ninggang Zhang declares that he has no conflict of interest. Yusheng Wang declares that she has no conflict of interest. Suxiang Zhang declares that she has 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.
: Informed consent was obtained from all individual participants included in the study.