Zhang, Lijie
Ma, Xiaoge
Liu, Menghan
Wu, Sihui
Li, Zhili
Liu, Yuhong
Article History
Received: 4 April 2024
Accepted: 23 July 2024
First Online: 2 August 2024
Declarations
:
: The study was approved by the Ethics Committee of the Beijing Chest Hospital affiliated to Capital Medical University (2018-BJXK-030). An introductory letter stating the study purpose and promising confidentiality was sent to participants. The informed consent were obtained from all participants before starting to answer the questions.
: Not applicable.
: The authors declare no competing interests.