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Most commonly used EGFR mutation testing methods for tissue and cytology samples across Asia, determined as a percentage of participating sites. Cobas EGFR Mutation Test (Roche) was included in the survey as an option, but was not selected by any site as the most commonly used test. †Two sites (5.0%) had missing data or did not test cytology samples. ‡Nature of methods not ascertained. EGFR, epidermal growth factor receptor.
