Liu, Jianbo
Shang, Yonghui
Zhu, Qiuyan
Zhang, Xinxue
Zheng, Jianbin
Article History
Received: 29 May 2019
Accepted: 26 June 2019
First Online: 4 July 2019
Compliance with ethical standards
: The author(s) declare that they have no competing interests. All experiments were performed in compliance with relevant laws or guidelines of Xianyang Normal University and approved by the ethics committee at Xianyang Normal University, China. Moreover, informed consent was obtained from human participants of this study.