Qin, Guofu
Zou, Keting
Tian, Li
Li, Yongbo
Funding for this research was provided by:
Social Development Foundation of Shaanxi Province, China (2017SF-384, 2017SF-383)
Article History
Received: 23 November 2017
Accepted: 3 April 2018
First Online: 10 April 2018
Compliance with Ethical Standards
:
: Guofu Qin declares that he has no conflict of interest. Keting Zou declares that she has no conflict of interest. Li Tian declares that she has no conflict of interest. Yongbo Li declares that she has no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.