Huang, Huizhen
Zhang, Yuelun
Shen, Le
Huang, Yuguang
Article History
Received: 22 June 2021
Accepted: 2 November 2021
First Online: 12 November 2021
Declarations
:
: Ethical approval for this study (Ethical Committee No. S-K984) was provided by the Ethical Committee of Peking Union Medical College Hospital, Beijing, China (Chairperson Prof Zhaohui Zhu) on December 11, 2019. As the participation was voluntary and no patients were involved, and all methods were performed in accordance with the relevant guidelines and regulations. The Ethical Committee approved this study waived the need for written informed consent. The Ethics approval document in Chinese and English were both uploaded as supplements.
: All authors have read and approved this manuscript for submission and there’s no individual identifying data.
: There are no competing interests in this manuscript.