Funding for this research was provided by:
Youth Research Fund from Fujian Provincial Health Bureau (2018-2-65)
Natural Science Foundation of Fujian Province (2018J01393)
Received: 23 May 2020
Accepted: 23 July 2020
First Online: 29 July 2020
Ethics approval and consent to participate
: This retrospective study was approved by the Ethics Committee of Zhongshan Hospital, Xiamen University. All subjects gave signed informed consent.
: Not applicable.
: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.