Funding for this research was provided by:
Program Shanghai Science and Technology Commission (16411966000)
shanghai jiaotong university (YG2014QN22)
Natural Science Foundation of China (81402571)
Received: 9 May 2020
Accepted: 21 July 2020
First Online: 31 July 2020
Ethics approval and consent to participate
: The study was conducted in accordance with the Declaration of Helsinki. The Institutional Review Board and the Ethics Committee of Shanghai Chest Hospital approved the study, and waived the requirement for patient consent due to its retrospective design.
: Not applicable.
: The authors declare that they have no competing interests.