Funding for this research was provided by:
PHRC (No. 22-2/13/MCS/Measles/RDC/Islamabad)
Received: 4 September 2018
Accepted: 5 June 2019
First Online: 5 July 2019
Ethics approval and consent to participate
: This study has been ethically approved by the Institutional Review Board (IRB) at Pakistan Medical Research Council (PMRC), Islamabad Pakistan. Informed written consent was obtained from the parents/ guardians of all the participants (children).
: Not Applicable.
: The authors declare that they have no competing interests.