1. Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia
2. Department of Paediatrics, Universiti Kebangsaan Malaysia Medical Centre, 56000 Kuala Lumpur, Malaysia
3. Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, 56000 Kuala Lumpur, Malaysia
4. Department of Material Science and Engineering, International College of Semiconductor Technology, National Yang Ming Chiao Tung University, 30010 Hsinchu, Taiwan