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Article History

Received: 23 November 2017

Accepted: 5 April 2018

First Online: 25 April 2018

Ethics approval and consent to participate

: Letters of permission were taken from Peshawar University and local administration office prior to the data collections. Oral agreements were also got from the local informants about the aims and objectives of the study prior to the interviews, and all the field data were collected through their oral consents. No further ethics approval was required.

: The authors declare that they have no competing interest.

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