1. Graduate School, Gadjah Mada University, Indonesia and
Ditjen Farmalkes Kementerian Kesehatan Indonesia, Loka Pengamanan Alat dan Fasilitas Kesehatan, Indonesia
2. Electrical Engineering and Information Technology Department, Gadjah Mada University, Indonesia
3. Department of Dental Biomedical Sciences, Gadjah Mada University, Indonesia