Presence of pink-color sign within 1 min after iodine staining has high diagnostic accordance rate for esophageal high-grade intraepithelial neoplasia/invasive cancer by Jia-Yao Zheng, Ya-Hua Chen, Yang-Yang Chen, Xiao-Ling Zheng, Shi-Shun Zhong, Wan-Yin Deng, Jin-Hui Zheng, Xian-Bin Guo, Li-Ying Gao, Wei Liang

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