Yao, Yuan http://orcid.org/0000-0002-5919-6023
Peng, Xiongqi http://orcid.org/0000-0002-3850-8331
Gong, Youkun http://orcid.org/0000-0002-8727-7381
Funding for this research was provided by:
National Natural Science Foundation of China (11172171)
Ministry of Education of the People's Republic of China (20130073110054)
Article History
Received: 22 September 2018
Accepted: 5 January 2019
First Online: 14 January 2019
Compliance with ethical standards
:
: No conflict of interest exits in the submission of this manuscript, and manuscript is approved by all authors for publication.