1. State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Disease, and Department of Preventive Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
2. Department of Cell and Molecular Biology, Tulane University, New Orleans, LA, USA
3. Southern Center for Biomedical Research and Fujian Key Laboratory of Developmental and Neural Biology, College of Life Sciences, Fujian Normal University, Fuzhou, Fujian, P.R. China
4. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China