Department of Anatomy and Cell Biology School of Dental Medicine University of Pennsylvania Philadelphia PA 19104 USA;
State Key Laboratory of Oral Diseases National Clinical Research Center for Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu 610041 Sichuan China;
Department of Anatomy and Cell Biology School of Dental Medicine University of Pennsylvania Philadelphia PA 19104 USA;
Department of Anatomy and Cell Biology School of Dental Medicine University of Pennsylvania Philadelphia PA 19104 USA;
South China Center of Craniofacial Stem Cell Research Guanghua School and Hospital of Stomatology Sun Yat-sen University Guangzhou 510055 Guangdong China;
Department of Anatomy and Cell Biology School of Dental Medicine University of Pennsylvania Philadelphia PA 19104 USA;
Research and Development Center for Tissue Engineering School of Stomatology Fourth Military Medical University Xi'an 710032 Shaanxi China;
Department of Anatomy and Cell Biology School of Dental Medicine University of Pennsylvania Philadelphia PA 19104 USA;
Department of Orthodontics Peking University School and Hospital of Stomatology 100081 Beijing China;
Department of Anatomy and Cell Biology School of Dental Medicine University of Pennsylvania Philadelphia PA 19104 USA;
Department of Orthodontics Peking University School and Hospital of Stomatology 100081 Beijing China;
Department of Anatomy and Cell Biology School of Dental Medicine University of Pennsylvania Philadelphia PA 19104 USA;
State Key Laboratory of Oral Diseases National Clinical Research Center for Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu 610041 Sichuan China;
Department of Anatomy and Cell Biology School of Dental Medicine University of Pennsylvania Philadelphia PA 19104 USA;
South China Center of Craniofacial Stem Cell Research Guanghua School and Hospital of Stomatology Sun Yat-sen University Guangzhou 510055 Guangdong China;