Li, Xue-Zheng
Jin, Feng
Zhang, Jian-Guo
Deng, Yun-Feng
Shu, Wei
Qin, Jing-Min
Ma, Xin
Pang, Yu
Article History
Received: 30 March 2020
Accepted: 8 June 2020
First Online: 29 June 2020
Ethics approval and consent to participate
: The study was approved by the Ethic Committee of Shandong Chest Hospital. Each patient provided informed consent prior to enrolment.
: Not applicable.
: The authors declare that they have no competing interests.