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Article History

Received: 8 March 2018

Accepted: 30 May 2018

First Online: 8 June 2018

Ethics approval and consent to participate

: Approval for the study was obtained from the National Ethics Committee for Health Research of the National Institute of Public Health, the Cambodian Ministry of Health. All respondents were orally informed of the study objectives and procedures before participation.

: Consent for publication was obtained from study participant during data collection.

: The authors declare that they have no competing interests.

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