Article History
Received: 22 July 2019
Accepted: 12 November 2019
First Online: 19 November 2019
Compliance with ethical standards
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: Prof. Mahawar has been paid honoraria by Medtronic, Gore, Olympus, and NHS for educational activities, outside the submitted work. Mr. Sharples and Dr. Graham have no conflict of interest or financial ties to disclose.