1. State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases; Center for Tissue Engineering; School of Stomatology; The Fourth Military Medical University; Xi'an Shaanxi China
2. Department of Craniofacial Development and Stem Cell Biology; Dental Institute; Kings College London; London UK
3. State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases; Department of Periodontology; School of Stomatology; The Fourth Military Medical University; Xi'an Shaanxi China
4. Xi'an Institute of Tissue Engineering & Regenerative Medicine; Xi'an Shaanxi China
5. Department of Stomatology; PLA Army General Hospital; Beijing China