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. 2018 Aug 9;18:804. doi: 10.1186/s12885-018-4694-x

Fig. 1.

Fig. 1

Overview of the participating countries to the pilot EQA scheme. United Kingdom: One laboratory received both RAS (KRAS/NRAS) and EGFR samples but did not submit results for KRAS/NRAS as they were in the process of validation. In total, 23 participants tested the samples for KRAS/NRAS analysis, and 31 participants for EGFR analysis