1. Department of Stomatology Clinical Department of Aerospace City Northern Beijing Medical District Chinese PLA General Hospital Beijing China
2. Department of Stomatology The 7th Medical Center Chinese PLA General Hospital Beijing China
3. Outpatient Department of PLA Macao Garrison Macao China
4. National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology & Shaanxi Key Laboratory of Oral Diseases Department of Prosthodontics School of Stomatology The Fourth Military Medical University Xi'an China
5. Halal Research center of IRI FDA Tehran Iran