Qian, Peng
Cao, Xuanchao
Xu, Xianjing
Duan, Mingqin
Zhang, Qian
Huang, Gairong
Funding for this research was provided by:
Henan province medical science and technology project (20160226)
Article History
Received: 22 May 2020
Accepted: 28 July 2020
First Online: 6 August 2020
Ethics approval and consent to participate
: This study protocol was approved by the Ethics Committee of the Yanan University Affiliated Hospital (CRD2017136845) and under the guidelines of the Declaration of Helsinki. Written informed consent was obtained from all participants.
: Not applicable.
: The authors have no conflicts of interest to report.