Funding for this research was provided by:
Universidad Internacional del Ecuador (EDM-INV-11-17)
Received: 28 April 2020
Accepted: 8 September 2020
First Online: 18 September 2020
Ethics approval and consent to participate
: Subjects were enrolled in the study after written informed consent obtained from their parents. The study was approved by the Universidad Internacional del Ecuador Ethics Committee registered code CEU-005-16, and by the health committee at each center participating in the study. The study was conducted according ethical principles for medical research involving human subjects (Declaration of Helsinki). Information on the study was provided to the directive councils and medical teams at each institution.
: Subjects were enrolled in the study after written informed consent obtained from their parents. No other personal identifiable information will be shared outside of the study.
: The other authors have indicated they have no potential conflicts of interest to disclose.