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Article History

Received: 19 July 2018

Accepted: 9 November 2018

First Online: 23 November 2018

Competing interest

: Dr. Bhaskaran Unnikrishnan, one of the authors of the present study, is an editorial board member of BMC Public Health.

: The study used secondary data available and released under the National Data Sharing and Accessibility Policy (NDSAP) of Government of India. The data set had no identifiable information on the survey participants, therefore no ethical approval is required for this work.

: Not applicable.

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