Herrera, Antonio
León, Andrés
Rodríguez, Fátima M.
Sepúlveda, Elisa M.
Guilbert, Lizbeth
Quiroz, Omar
Cevallos, Luis
Zerrweck, Carlos http://orcid.org/0000-0001-7358-2652
Article History
Received: 3 May 2020
Revised: 11 August 2020
Accepted: 11 August 2020
First Online: 17 August 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. This retrospective analysis was approved by the local research and ethics committees (Institutional Register 212-110-11-19) and registered at the national committees (CONBIOÉTICA-09-CEI-001-20160404).
: For this type of study, formal consent is not required. Every patient signed an informed consent for the surgery.