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. 2018 May 27;11:1756284818775058. doi: 10.1177/1756284818775058

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© The Author(s), 2018

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — Starting at the age of 20, colonoscopy with blue indigo carmine is scheduled every 2 years. In cases of incomplete colonoscopy, insufficient bowel preparation, absence of chromoendoscopy achievement or adenoma detection, the interval between screening colonoscopies was adjusted.

Exam denotes colonoscopy, complete exam denotes caecal intubation, optimal preparation denotes a sufficient bowel preparation according to endoscopist appreciation or defined as a Boston scale >6 with an underscore per segment >2, indigo carmine denotes indigo carmine chromoendoscopy achievement and adenoma denotes adenoma detection during colonoscopy.