Chen, Ruping
Sun, Guangshan
Liu, Rui
Sun, Ao
Cao, Yujie
Zhou, Xiaojie
Zhang, Sha
Article History
Received: 4 June 2020
Accepted: 8 April 2021
First Online: 19 May 2021
Declarations
:
: The written informed consent was obtained from all subjects before they participated in the study. The study was performed in accordance with the Declaration of Helsinki, and the protocol was approved by the ethics committee of Tianjin Union Medical Centre (2020-B08).
: Not applicable.
: The authors declare that they have no competing interests.