Funding for this research was provided by:
National Natural Science Foundation of China (31700668, 81702097, 81902024)
Beijing Municipal Administration of Hospitals (QML20181601)
National Major Science and Technology Projects of China (2017ZX10201301-004)
Received: 2 June 2020
Accepted: 25 August 2020
First Online: 7 September 2020
Ethics approval and consent to participate
: This study was conducted under the approval of the Ethics Committee of Beijing Chest Hospital, Capital Medical University and was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. All participants gave consent and signed the form.
: Not applicable.
: None declared.