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Article History

Received: 11 April 2018

Accepted: 26 June 2018

First Online: 4 July 2018

Ethics approval and consent to participate

: The study was approved by the Ethics Committee of the ESIC Medical College & PGIMSR, Chennai. All participants provided a written fully informed consent before answering the questionnaire.

: Consent for publication is not applicable as no individual identifiable data is published.

: The authors declare that they have no competing interests.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.