Yang, Jiaqi http://orcid.org/0000-0002-9146-9431
Li, Shu http://orcid.org/0000-0002-8780-062X
Jiang, Haifeng http://orcid.org/0000-0001-7096-1091
Su, Caiyun http://orcid.org/0000-0002-9911-9655
Shao, Yifei http://orcid.org/0000-0002-5559-2897
Gao, Yan http://orcid.org/0000-0001-5248-8907
Li, Junfeng http://orcid.org/0000-0001-9313-6975
Article History
Received: 17 April 2018
Accepted: 4 September 2018
First Online: 12 September 2018
Compliance with ethical standards
:
: The authors declare that they do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted.