1. State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University , Xi’an, Shannxi Province 710032, China
2. State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University , Xi’an, Shannxi Province 710032, China
3. Department of Surgical Oncology, The Second Affiliated Hospital of Xi’an Jiaotong University , Xi’an, Shannxi Province 710004, China