Ethics Statement
ICH
This study was approved by the National Ethical Committee for Health Research (Deliberation no. 2020-01-010) and the Institutional Ethical Committee for Research in Health Sciences (N/Ref. A09-2029/CEIRES). The study was also approved by the Oxford Tropical Research Ethical Committee (OxTREC reference: 52-19). The study was conducted in accordance with the following guidelines: (1) consensus ethical principles derived from international guidelines including the Declaration of Helsinki, (2) International Conference on Harmonization Good Clinical Practice guidelines (ICH GCP E6 [R2]), and (3) applicable laws and regulations. Written informed consent was obtained from all parents/guardians before enrollment into the study.