1. Department of Electrical Engineering, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta, Bantul, Indonesia
2. Department of Electrical Engineering, Faculty of Industrial Technology, University Islam Indonesia, Sleman, Indonesia
3. Department of Information Technology, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta, Bantul, Indonesia
4. Department of Oral Medicine, Faculty of Dentistry, Baiturrahmah University, Padang, Indonesia
5. Department of Computer Science and Information Engineering, College of Information and Electrical Engineering, Asia University, Taichung City, Taiwan