Peiyi Xia1, Enjie Liu1, Pan Li1, Wencai Li1, Guozhong Jiang2. 1. Department of Pathology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China. 2. Department of Pathology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China. Electronic address: guozhongjiang@zzu.edu.cn.