1. Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
2. Department of Family Oral Health, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
3. WhiteSmileclear Laboratory Services, Berjaya Times Square, Kuala Lumpur, Malaysia
4. Faculty of Dentistry, Mahsa University, Bandar Saujana Putra, Jenjarom, Selangor, Malaysia