1. School of Dentistry, Melbourne University, 720 Swanston Street, Carlton, Melbourne, VIC, 3010, Australia
2. School of Computer Science and Software Engineering, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
3. Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago, 310 Great King Street, Dunedin 9054, New Zealand