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Article History

Received: 10 June 2020

Accepted: 24 August 2020

First Online: 2 September 2020

Compliance with ethical standards

:

: The authors declare that they have no conflict of interest.

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

: A formal informed consent procedure was waived due to the retrospective nature of this study.