Article History
Received: 15 July 2020
Accepted: 11 January 2021
First Online: 20 January 2021
Compliance with ethical standards
:
: We declare that we do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institution and with the 1964 Helsinki declaration and its later amendments. The Local Ethics Committee did not require an ethical approval for this retrospective study.