Sánchez-Arteaga, A.
Tallón-Aguilar, L.
Tinoco-González, J.
Perea del-Pozo, E.
Navas-Cuellar, A.
Padillo-Ruíz, J.
Article History
Received: 18 January 2020
Accepted: 4 May 2020
First Online: 22 May 2020
Compliance with ethical standards
:
: The authors do not declare any conflict of interest or sources of funding for the present work. The authors also declare that the present work is not based on a previous communication to a society or meeting.
: Ethical approval for this retrospective study was not required.
: All procedures performed in the study involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments.
: For this type of study, formal consent was not required.