1. Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University; Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
2. Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University; Department of Radiology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
3. The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China