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Flow chart of the French regional retrospective cohort. *, due to the 2 databases and the impossibility to unit withdrawal of duplicates apart from individual file review these 2 figures are estimated. NSCLC, non-small cell lung carcinoma; EGFR, epidermal growth factor receptor; OSUM, other single uncommon mutation; E20ID, exon 20 insertion/duplication; ECM, EGFR complex mutation.
