| Affiliation: | 1. Information Center, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China;2. Department of Periodontology, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China;3. Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China;4. Social Medicine and Global Health, Department of Clinical Sciences, Lund University, Malm?, Sweden;5. Department of General Dentistry, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China |
