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Article History

Received: 22 May 2020

Accepted: 13 July 2020

First Online: 12 August 2020

Compliance with ethical standards

:

: Fabián Pérez Rivera declares that he has 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. For this kind of retrospective observational study no ethical approval is required.

: Informed consent was obtained from all individual participants included in the study.

: Patients signed informed consent regarding publishing their data and photographs.