Fig. 2From: The levels of urine CTX-II, C2C, and PYD in children patients with Kashin-Beck disease in Qinghai Province of ChinaPrediction accuracies of three indicators for the early diagnosis of KBD compared to the external control group. Part a, part b, and part c showed the ROC curves and AUC of CTX-II, C2C, and PYD, respectively. Part d showed the comparison of ROC curves and AUC of CTX-II, C2C, and PYDBack to article page