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Article History

Received: 2 June 2020

Accepted: 13 October 2020

First Online: 1 November 2020

Compliance with ethical standards

:

: The authors declare that there are no conflict of interests.

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.

: Approval for the study was granted by the medical education board of the University of Health Sciences, Ataturk Chest Diseases and Chest Surgery Training and Research Hospital, Ankara, Turkey (Approval number: 2020/661).

: For this type of study formal consent is not required because our study was retrospective nature.