Wen, Qi
Chang, Xueli
Guo, Junhong
Article History
Received: 8 September 2019
Accepted: 17 October 2019
First Online: 6 November 2019
Compliance with ethical standards
:
: The authors declare no conflicts of interest.
: Ethical approval was obtained from the first hospital of ShanXi Medical University Research Ethics Committee.
: Informed consent was obtained from all individual participants included in the study.