1. Department of Dental Implantology, Hospital of Stomatology, Jilin University, Changchun, China
2. Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
3. Department of Clinical Molecular Biology, University of Oslo and Akershus University Hospital, Lørenskog, Norway
4. Department of Pediatric Dentistry, Hospital of Stomatology, Jinlin University, Changchun, China