Andrades, Patricio
Quispe, Diego
Dominguez, Carlos
Jara, RocĂo
Cisternas, Juan Pablo
Lobos, German
Albornoz, Claudia
Danilla, Stefan
Erazo, Cristian
Sepulveda, Sergio
Article History
Received: 6 January 2019
Accepted: 23 April 2019
First Online: 13 May 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflicts of interest to disclose.
: 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 type of study, informed consent is required; all the participants gave their informed consent in writing for the study.