Funding for this research was provided by:
Medical Research Council of Saint-Joseph University (FMD98)
Received: 2 December 2016
Accepted: 31 January 2018
First Online: 6 February 2018
Ethics approval and consent to participate
: The protocol of the study was approved by the Ethics Committee of Saint Joseph University of Beirut, (USJ-2014-9). Written informed consent was received from parents and verbal consent was obtained from the children.
: Not applicable.
: The authors declare that they have no competing interests.
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