e21667Background: Previous studies suggested that the efficacy of osimertinib was better in patients with epidermal growth factor receptor (EGFR) exon 19 deletion (ex19del) than exon 21 Leu858Arg (... Click to show full abstract
e21667Background: Previous studies suggested that the efficacy of osimertinib was better in patients with epidermal growth factor receptor (EGFR) exon 19 deletion (ex19del) than exon 21 Leu858Arg (...
               
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