Article History
Accepted: 31 October 2019
First Online: 20 November 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by the ethics committee for research with humans (CEISH) and the Institutional Board Committee of the San Francisco University of Quito (USFQ). All procedures performed in studies involving human participants were in accordance with the ethical standards of the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from the mothers of all individual included in the study.