Xing, Tianying
Ma, Jinghong
Ou, Tongwen
Article History
Received: 3 February 2021
Accepted: 5 March 2021
First Online: 19 March 2021
Declarations
:
: Not applicable.Availability of data and materials: All data generated or analyzed during this study are included in this published article.
: This study was performed in accordance with the principles of the Declaration of Helsinki of 1964. Approval was granted by the Ethics Committee of Xuanwu Hospital, Capital Medical University. Consent to participate was waived by the Ethics Committee of Xuanwu Hospital, Capital Medical University because of the retrospective study design.
: The authors declare that they have no competing interests.