Wang, Jing
Sun, Yizhu
Teng, Shengnan
Li, Kefeng
Funding for this research was provided by:
Natural Science Foundation of Shandong Province (ZR2017MH075)
Article History
Received: 22 October 2019
Accepted: 3 March 2020
First Online: 15 April 2020
Ethics approval and consent to participate
: This prospective cohort study was approved by the Institutional Review Board (IRB) of Yantai Yuhuangding Hospital ([2018]11) and registered on the Chinese Clinical Trial Registry (registry ID: ChiCTR1800015321). Written consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.