1. State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology Wuhan University Wuhan China
2. Department of Cariology and Endodontics, School and Hospital of Stomatology Wuhan University Wuhan China
3. Department of Endodontics Stomatological Hospital of Xiamen Medical College Xiamen China