1. Key Laboratory for Oral Biomedical Engineering of the Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
2. Department of Preventive Dentistry; Peking University School and Hospital of Stomatology; Beijing China
3. Faculty of Dentistry; The University of Hong Kong; Hong Kong SAR China
4. Department of Preventive and Restorative Dentistry; College of Dental Sciences; Radboud University Medical Center; Nijmegen the Netherlands
5. Department of Global Oral Health; College of Dental Sciences; Radboud University Medical Center; Nijmegen the Netherlands