1. Department of Biomedical Engineering, Biosensor and Embedded System Laboratory, Universiti Malaya, Kuala Lumpur, Malaysia
2. Department of Electrical Engineering, Faculty of Engineering, Analog, Digital and RF Research Group, Universiti Malaya, Kuala Lumpur, Malaysia
3. Centre for Telecommunication Research and Innovation (CeTRI), Fakulti Teknologi dan Kejuruteraan Elektronik dan Komputer, Universiti Teknikal Malaysia Melaka, Durian Tunggal, Melaka, Malaysia
4. Department of Electrical Engineering, Universiti Malaya, Kuala Lumpur, Malaysia
5. Department of Biomedical Engineering, Centre for Innovation in Medical Engineering, Universiti Malaya, Kuala Lumpur, Malaysia