Retraction Retraction dated 2022-10-18

Article History

Received: 8 December 2020

Accepted: 24 May 2021

First Online: 14 July 2021

Change Date: 18 October 2022

Change Type: Correction

Change Details: This article has been retracted. Please see the Retraction Notice for more detail:

Change Details: https://doi.org/10.1186/s12890-022-02162-0

Declarations

:

: Written informed consent was obtained from all participants. The study complied with the Declaration of Helsinki and was approved by the Ethics Committee of China-Japan Friendship Hospital (Beijing, China.

: Not applicable.

: The authors declare that they have no competing interests.