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. 2018 Sep 20;9(9):185. doi: 10.1038/s41424-018-0047-y

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — ¹“Routine tester” is defined as a provider indicating a frequency of ordering MSI/IHC testing in 100% of cases of CRC in patients < 50 years old. This definition applies to both testing performed on colonoscopic biopsies or surgical resection specimens. ² “Non-routine tester” is defined as a provider indicating a frequency of ordering MSI/IHC testing in “0%”, “25%”, “50%” or “75%” of the time in CRC patients < 50 years old. This definition likewise applies to both testing performed on colonoscopic biopsies or surgical resection specimens