Article History
Received: 15 February 2017
Accepted: 8 May 2018
First Online: 24 May 2018
Ethics approval and consent to participate
: Ethical approval for the study in all schools was given by the Institutional Review Board of King Edward Medical University, letter ref. no 299/RC/KEMU dated 8 June 2016. Being private schools, the school directors/ heads were directly approached with the study proposal and ethical approval requested for the study to be conducted in their schools. Teachers of the participating schools will have to sign a written consent form to participate. Schools were required to obtain consent forms signed by parents/guardians for students to participate in the study.
: The authors declare that they have no competing interests.
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