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Kaplan‐Meier curves for progression‐free survival (PFS) in the patients who received (a) osimertinib as second‐line or third‐/later‐line (
) second‐line (n = 19), and (
) third‐/later‐line (n = 37) and (b) osimertinib as second‐line or fourth‐/later‐line (
) second‐line (n = 19), and (
) fourth‐/later‐line (n = 22).
