Document is current

Article History

Received: 6 August 2018

Accepted: 24 October 2018

First Online: 8 November 2018

Ethics approval and consent to participate

: The study was approved by the Institute Ethics committee of Institute of Medical Sciences, Banaras Hindu University, Varanasi, and informed consent was obtained from each of the individual participant.

: Not applicable.

: The authors declare that they have no competing interests.

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