EPCAM and atrial fibrillation: The CIR in patients with positive LNs and H-CSC levels was 60% (95% CI, 26.2–87.8) for H-AF, 55% (95% CI, 23.4–83.3) for H-EpCAM, and 66.7% (95% CI, 22.3–95.7) for H-EpCAM/AF.