Funding for this research was provided by:
Dirección General de Investigación, Universidad de Las Américas, Quito-Ecuador (PSI.CPE.17.06)
Received: 29 August 2019
Accepted: 16 July 2020
First Online: 1 September 2020
Ethics approval and consent to participate
: The Institutional Review board of the Universidad San Francisco de Quito, Ecuador (ref. 2017-113E) approved the protocol of the present study. All the participants were informed of the study and signed an informed consent.
: Not applicable.
: The authors declare that they have no competing interests.