Wang, Xiaoyan http://orcid.org/0000-0001-6949-2056
Zhang, Xiaoyan
Liu, Yiran
Jiang, Tingting
Dai, Yang
Gong, Yangyang
Li, Qin
Wang, Xueyan
Article History
Received: 16 April 2019
Accepted: 15 October 2019
First Online: 27 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: For this type of study, formal consent is not required.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committees and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.