Updates are available Correction dated 2022-04-28

Article History

Received: 22 May 2020

Accepted: 16 September 2020

First Online: 22 September 2020

Change Date: 14 April 2022

Change Type: Update

Change Details: Following the original publication of this article, the authors flagged that a required funding statement was missing from the Funding declaration; please see the linked correction for further details.

Change Date: 28 April 2022

Change Type: Correction

Change Details: A Correction to this paper has been published:

Change Details: https://doi.org/10.1186/s12890-022-01938-8

Ethics approval and consent to participate

: This case series was approved by the institutional review board of Daegu Catholic University Medical Center (No. CR-19-069). The requirement for informed consent was waived. Patients in these cases and the information department of this hospital allowed access and use of medical records.

: Written informed consent was obtained from patients for publication of this report and identifying images or other personal or clinical details.

: All authors listed above have no conflicts of interest to declare.