1. Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology and Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
2. Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing, China
3. School and Hospital of Stomatology, Wuhan University, Wuhan, China
4. The Dental College of Georgia, Augusta University, Augusta, GA, USA
5. Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Bologna, Italy
6. Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, USA
7. State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an, China