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Contributors RR contributed in design, data collection, analysis of data and manuscript preparation. BS contributed in design and preparation and editing of manuscript
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests RR received educational support from Aquilant Pvt Ltd. BPS is paid speaker for Norgine and Olympus UK (Key Med) Pvt Ltd.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; externally peer reviewed.
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