Song, Nian-Peng
Zhen, Xiao-Wen
Li, Liu-dong
Zhong, Lin
Wang, Hua
Funding for this research was provided by:
the Collaboration Project of Shandong Natural Science Foundation (ZR2017LH004)
Department of Science & Technology of Yantai, Shandong province of China (2018SFGY090, 2016ZH083)
Article History
Received: 7 June 2020
Accepted: 30 September 2020
First Online: 9 October 2020
Ethics approval and consent to participate
: The study was conducted following the Declaration of Helsinki and was approved by the Human Research Ethics Committee of Yantai Yuhuangding hospital. All participants provided written informed consent.
: Not applicable.
: The authors declare no competing financial interests in this article.