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Kaplan-Meier overall survival estimates according to CTC in patients with intrahepatic/perihilar-distal CCA
A: CTC ≥2 vs. CTC <2, Intrahepatic CCA
B: CTC ≥5 vs. CTC <5, Intrahepatic CCA
C: CTC ≥2 vs. CTC <2, Perihilar-distal CCA
D: CTC ≥5 vs. CTC <5, Perihilar-distal CCA
