1. Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
2. National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
3. Center for Craniofacial Stem Cell Research and Regeneration, Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China