1. National Clinical Research Center for Oral Diseases, Beijing, P.R. China
2. National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
3. Beijing Key Laboratory of Digital Stomatology, Beijing, P.R. China
4. Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, P.R. China
5. Department of Neurosurgery, Peking University First Hospital, Beijing, P.R. China