Wu, Shouling
Xu, Luli
Wu, Mingyang
Chen, Shuohua
Wang, Youjie
Tian, Yaohua http://orcid.org/0000-0002-9853-6991
Article History
Received: 15 April 2021
Accepted: 9 July 2021
First Online: 16 July 2021
Declarations
:
: The study was performed according to the guidelines of the Declaration of Helsinki and was approved by the Ethics Committee of the Kailuan General Hospital (Approval Number: 2006–05). Written informed consent was obtained from all participants.
: Not applicable.
: These authors declare that they have no conflicts of interests.