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Article History

Received: 23 November 2017

Accepted: 29 April 2018

First Online: 8 May 2018

Ethics approval and consent to participate

: Not applicable.

: M.B. is the inventor of ClearScope and a shareholder in Clearwater Clinical, a company that manufactures a smartphone adapter for the purposes of endoscopy. No corporate funding was used for this project. The other authors have no conflicts of interest to declare.

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