Ming Zeng1, Xinming Chen2, Xiaolong Guo3, Shaodong Yang4. 1. The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China. 2. The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China; Department of Pathology, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China. 3. The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China; Department of Oral Radiology, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China. 4. The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China; Department of Pathology, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China. Electronic address: ysd170811@whu.edu.cn.