1. Orthodontics, Division of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, the University of Hong Kong, Hong Kong, Hong Kong SAR, PRC
2. Department of Radiology, Hong Kong Children’s Hospital, Hong Kong, Hong Kong SAR, PRC
3. Department of Diagnostic and Interventional Radiology, Kwong Wah Hospital, Hong Kong, Hong Kong SAR, PRC
4. Department of Paediatrics, Kwong Wah Hospital, Hong Kong, Hong Kong SAR, PRC