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(A) ROC curve of healthy subjects vs. IM, HGD, and LGD; AUC was 0.9655. (B) ROC curve of healthy subjects vs. IM; AUC was 0.9736. (C) ROC curve of healthy subjects vs. LGD and HGD; AUC was 0.9495. (D) ROC curve of healthy subjects vs. EC; AUC was 0.9318. IM: intestinal metaplasia; LGD: low-grade dysplasia; HGD: high-grade dysplasia; EC: early cancer.
