Funding for this research was provided by:
Hospital for Sick Children
International Development Research Centre (108416-002 & 108640-001)
Direktoratet for Utviklingssamarbeid (QZA-16/0395)
Bill and Melinda Gates Foundation (OPP1171560)
UNICEF (PCA 20181204)
Received: 30 April 2019
Accepted: 28 February 2020
First Online: 29 May 2020
Ethics approval and consent to participate
: The London School of Hygiene and Tropical Medicine Ethics Committee and the American University of Beirut Institutional Review Board approved the research protocol. Verbal informed consent was sought and obtained from all respondents.
: Not applicable.
: The authors declare that they have no competing interests.