1. State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Cranio-facial Trauma and Orthognathic Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, P.R.China
2. Department of Stomatology, General Hospital of Northern Theater Command, 83 Wenhua Road, Shenyang 110016, P.R.China
3. College of Information and Electrical Engineering, Shenyang Agricultural University, Shenyang 110866, P.R.China
4. Outpatient Department, The Ninth Retired Cadres Retreat of Liaoning Military Command, 176 Dongbei Road, Shenyang 110044, P.R.China
5. Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, P.R.China