Corresponding Author

National Center for Stomatology, Shanghai, China

National Clinical Research Center for Oral Diseases, Shanghai, China

Shanghai Key Laboratory of Stomatology, Shanghai, China

Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, China

Department of Second Dental Center, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China

Correspondence

Yiqun Wu and Yuanyuan Sun, Department of Second Dental Center, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, 280 Mohe Road, Shanghai 201999, China.

Email: yiqunwu@hotmail.com (Y.W.); Email: sunyy1205@163.com (Y.S.)