1. State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Department of General Dentistry and Emergency, School of Stomatology, Fourth Military Medical University , Xi’an 710032, P.R. China
2. The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University , Xi’an 710049, P.R. China
3. Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University , Xi’an 710049, P.R. China