1. Department of Computer Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
2. Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom, Thailand
3. College of Biomedical Engineering, Rangsit University, Muang, Pathum Thani, Thailand
4. Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand