1. Department of Endodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
2. College of Stomatology, Shanghai Jiao Tong University, Shanghai, P. R. China
3. National Clinical Research Center for Oral Diseases, National Center for Stomatology, Shanghai, P. R. China
4. Shanghai Key Laboratory of Stomatology, Shanghai, P. R. China
5. Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, P. R. China
6. Department of Oral Implantology, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, P. R. China
7. Department of Nursing, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China