Document is current
Any future updates will be listed below
-
Authors
Ma, Xin
Zhang, Yu
Zhang, Chao
Yang, Zhi-jun
Liu, Pi-nan
- License Information
-
More Information
Article History
Received: 12 September 2022
Revised: 18 October 2022
Accepted: 22 December 2022
First Online: 3 January 2023
Declarations
:
: The authors declare no competing interests.
: This retrospective research obtained approval from the review board of Beijing Tiantan Hospital, Capital Medical University. The study was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments. Informed consent was obtained from all individual participants (or legal guardians) included in the study.
: The authors declare no competing interests.
