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Article History

Received: 9 December 2020

Revised: 4 January 2021

Accepted: 7 January 2021

First Online: 16 January 2021

Compliance with Ethical Standards

:

: Vanessa Murad and Gi Jeong Cheon 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 Helsinki declaration as revised in 2013 and its later amendments or comparable ethical standards.

: The institutional review board of our institute approved this retrospective study, and the requirement to obtain informed consent was waived.