Funding for this research was provided by:
Natural Science Foundation for the Returned Scholars of Heilongjiang Province (LC2017039)
Heilongjiang Postdoctoral Fund (LBH-Z16099)
Foundation of Heilongjiang National Health and Family Planning Commission (2017-119)
Received: 15 June 2020
Accepted: 9 November 2020
First Online: 23 November 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Harbin Medical University, and all patients involved provided written informed consent.
: All patients involved in this study agree the publication of the data.
: The authors declare that they have no conflict of interest.