Funding for this research was provided by:
National Major Science and Technology Projects of China (2020ZX09201-018)
Postdoctoral Research Foundation of China (2016M602100)
Received: 31 July 2020
Accepted: 10 November 2020
First Online: 19 November 2020
Ethics approval and consent to participate
: The study passed the review of Medical Ethics Committee of the Affiliated Hospital of Qingdao University on August 30, 2018, and obtained the approval (No.: QYFYEC 2018–065-01). The written informed consents was obtained from all participants.
: Not applicable
: The authors report no conflicts of interest.