Zou, Yizhou
Wang, Wanli
Zheng, Dongmei
Hou, Xu
Article History
Received: 4 December 2020
Accepted: 27 January 2021
First Online: 19 March 2021
Ethics approval and consent to participate
: The Ethics Committee approved the protocol of this study of Shandong Provincial Hospital (LCYJ: No. 2017–028). Informed consent was obtained from each study participant. All protocols used followed relevant guidelines and regulations.
: Not applicable.
: Yizhou Zou, Wanli Wang, Dongmei Zheng, and Xu Hou declare that there are no conflicts of interest.