1 Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia; Dentistry Discipline, Department of Rural Clinical Science, La Trobe Rural Health School, Bendigo, VIC, Australia; Faculty of Dentistry, Universitas Padjadjaran, Bandung, Indonesia.
2 Menzies Health Institute Queensland (NWJ) and School of Medicine and Dentistry, Griffith University, Gold Coast, QLD, Australia; Faculty of Dentistry Oral and Craniofacial Sciences, King's College London, London, UK.
3 Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia.
4 Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia. Electronic address: nicola.cirillo@unimelb.edu.au.