Received: 24 March 2020
Accepted: 3 August 2020
First Online: 7 August 2020
Ethics approval and consent to participate
: This study has been approved by the Ethics Committees at IFF/FIOCRUZ, Brazil (Protocol Number: 1.930.996–2017). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee. Written informed consent was obtained from all mothers over 18 years old included in the study. A parent or guardian was on behalf of any participants under the age of 18 to write informed consent.
: Not applicable.
: The authors declare that they have no competing interests.