1. School of Stomatology Lanzhou University Lanzhou China
2. Applied Oral Sciences & Community Dental Care Faculty of Dentistry The University of Hong Kong Hong Kong China
3. Gansu Province Key Lab of Maxillofacial Reconstruction and Intelligent Manufacturing Lanzhou China
4. Institute of Biomechanics and Medical Engineering Lanzhou University Key Laboratory of Mechanics on Disaster and Environment in Western China Ministry of Education Lanzhou University Lanzhou China
5. Department of Oral and Maxillofacial Surgery Gansu Province Hospital Lanzhou China