1. Department of Stomatology Lanzhou General Hospital Lanzhou Military Area Command of Chinese PLA Lanzhou Gansu China
2. State Key Laboratory of Military Stomatology & National Clinical Research Centre for Oral Diseases & Shaanxi Key Laboratory of Stomatology Department of Prosthodontics School of Stomatology The Fourth Military Medical University Xi'an Shaanxi China
3. Department of Clinical Nursing School of Nursing Fourth Military Medical University Xi'an Shaanxi China
4. Department of Stomatology PLA Army General Hospital Beijing China
5. School of Chemical Engineering Nanjing University of Science and Technology Nanjing Jiangsu China
6. State Key Laboratory of Military Stomatology & National Clinical Research Centre for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases Department of General Dentistry and Emergency School of Stomatology The Fourth Military Medical University Xi'an Shaanxi China