Ethics approval and consent to participate
This study was approved by the Ethical Committee of Hospital SMIQ S de R.L. de C.V. (CONBIOÉTICA-22-CEI-003-20171130, #16CI22014059) and by the Ethical Committee of Sociedad de Beneficencia Española, l.A.P. (CONBIOÉTICA-09-CEI-009-20170421, #15CI09016029). After the study was properly explained, parents/caregivers were asked to sign the informed consent form. The study was performed in accordance with the Declaration of Helsinki and its later amendments.