Zhan, Xiechao http://orcid.org/0000-0001-5198-6461
Yan, Chuangye
Zhang, Xiaofeng
Lei, Jianlin http://orcid.org/0000-0002-9384-8742
Shi, Yigong
Funding for this research was provided by:
the National Natural Science Foundation of China
Article History
Received: 19 August 2018
Revised: 5 September 2018
Accepted: 6 September 2018
First Online: 12 October 2018
Competing interests
: The authors declare no competing interests.