Liu, Hua
Song, Mei
Zhai, Zhong-Hui
Shi, Rui-Jie
Zhou, Xiao-Lan
Funding for this research was provided by:
Natural Science Foundation of Xi’an Medical University (16hlxk18)
Shaanxi Health and Family Planning Commission (2016A005)
Shaanxi Planning Office of philosophy and social sciences (2017G011)
Article History
Accepted: 22 November 2018
First Online: 5 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by the Medical Ethics Committee of Xi’an Medical University (No. XMU16-046).