Wei, Li
Tang, Liang
Chang, Haiyan
Huo, Song
Li, Yan
Article History
Received: 15 July 2019
Accepted: 3 September 2019
First Online: 24 September 2019
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: This research complied with the Helsinki Declaration and was approved by the Ethics Committee of Jining No. 1 People’s Hospital (No. 20150013) and Affiliated Hospital of Jining Medical University (No. C-15042). Informed consent was gained from the study participants prior to their participation.