Cui, Yunpeng
Shi, Xuedong
Mi, Chuan
Wang, Bing
Li, Huaijin
Pan, Yuanxing
Lin, Yunfei
Article History
Received: 3 August 2021
Accepted: 13 October 2021
First Online: 22 October 2021
Declarations
:
: This retrospective study involving human participants was in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The local Ethics Committee of Peking University First Hospital approved this study (2017[1417]).All participants in this study were above 16 years of age. The need for written informed consent was waived by the Peking University First Hospital ethics committee due to retrospective nature of the study.
: All authors read and approved the final manuscript. All authors agree to publish the article.
: The authors declare that they have no competing interests.