Tie, Hongtao
Kong, Lingwen
Tu, Zhengjie
Chen, Dan
Zheng, Delai
Wu, Qingchen
Li, Qiang http://orcid.org/0000-0003-1058-6407
Article History
Received: 29 May 2020
Accepted: 22 September 2020
First Online: 29 September 2020
Ethics approval and consent to participate
: This retrospective cohort study was approved by the Institutional Review Board of the First Affiliated Hospital of Chongqing Medical University. Since current studies is a retrospective study, the patients’ written informed consent is waived.
: Not Applicable.
: The authors declare that we have no conflict of interest.