Xiong, Wei
Du, He
Ding, Wei
Sun, Jinyuan
Xu, Mei
Guo, Xuejun
Article History
Received: 22 February 2020
Accepted: 29 June 2020
First Online: 16 July 2020
Ethics approval and consent to participate
: This protocol was approved by the institutional review boards of Shanghai Xinhua Hospital, Shanghai Pulmonary Hospital, and Shanghai Punan Hospital.
: Not applicable.
: The authors declare that they have no competing interests.