Chen, Xi
Wang, Yuru
Zhao, Xiuxiu
Liu, Binyuan
Xu, Yang
Wang, Yige
Funding for this research was provided by:
National Natural Science Foundation of China (21605036, 21771050)
Natural Science Foundation of Hebei Province (B2017202068, B2017202048)
Foundation of Hebei Educational Committee (QN2016172)
Article History
Received: 6 August 2018
Accepted: 12 December 2018
First Online: 9 January 2019
Compliance with ethical standards
: The author(s) declare that they have no competing interests.