Wang, Yanfang
Wang, Wei
Feng, Ying
Tan, Zhangyun
Yang, Xiaomin
Peng, Danhong
Zhao, Yinqing
Dong, Han
Zheng, Qingmei
Zeng, Xiaoqin
Zou, Ying
Sun, Aijun http://orcid.org/0000-0002-0049-0906
Article History
Received: 19 September 2020
Accepted: 27 March 2021
First Online: 4 April 2021
Declarations
:
: The authors declared no conflicts of interest.
: The study was reviewed and approved by the Ethics Committee of Peking Union Medical College Hospital (Ethical code number: S-k1189-1; date of approval: May 08, 2020) and is in accordance with the Declaration of Helsinki.
: Return of a completed questionnaire was considered consent to participate.
: All authors provided consent for publication.