Text and Data Mining valid from 2018-11-08
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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