1. Department of Stomatology, Shenzhen Longhua District Central Hospital, Guangdong Medical University, Shenzhen, Guangdong 518110, P.R. China
2. Department of Oral and Maxillofacial Surgery, Shanghai Stomatological Hospital, Fudan University, Shanghai 200001, P.R. China
3. Department of Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai 200001, P.R. China