1. Shandong Provincial Key Laboratory of Oral Tissue Regeneration, School of Stomatology Shandong University Jinan Shandong Province China
2. Department of Oral and Maxillofacial Surgery, School of Stomatology Shandong University Jinan Shandong Province China
3. Department of Central Laboratory, Hospital and School of Stomatology Peking University Beijing China
4. Department of Oral Pathology, Hospital and School of Stomatology Peking University Beijing China
5. Department of Endodontics, School of Stomatology Shandong University Jinan Shandong Province China