1. Stomatology Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
2. The Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
3. Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
4. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, China
5. Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu, China
6. School and Hospital of Stomatology, Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key lab of Fujian College and University, Fuzhou, China