1. * Faculty of Dentistry, National University of Singapore , Singapore 119085 , Singapore
2. † Department of Biochemistry and Pharmacology, The University of Melbourne , Melbourne VIC 3010 , Australia
3. ‡ Private practice , Sydney , NSW 2000 , Australia
4. § Private practice , Ardoss , WA 6153 , Australia
5. ‖ Melbourne Dental School (Orthodontics), The University of Melbourne , Melbourne VIC 3010 , Australia