1. Faculty of Dentistry Department of Restorative Dentistry Universiti Kebangsaan Malaysia Kuala Lumpur Malaysia
2. Faculty of Dentisty Department of Restorative Dentistry Universiti Kebangsaan Malaysia Kuala Lumpur Malaysia
3. Faculty of Medicine Department of Community Health Universiti Kebangsaan Malaysia Kuala Lumpur Malaysia
4. Restorative Dental Sciences of the Faculty of Dentistry Hong Kong University Hong Kong Hong Kong