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Comparison of EGFR 19DELs, L858R and T790M detected by ddPCR and ARMS-PCR in plasma circulating tumor DNA. In the present study there was a total of 50 cases. ddPCR, droplet digital polymerase chain reaction; EGFR, epidermal growth factor receptor; ARMS-PCR, amplification refractory mutation system polymerase chain reaction.
