1. School of Distance Education, Universiti Sains Malaysia, Penang, Malaysia
2. School of Chemical Sciences, Universiti Sains Malaysia, Penang, Malaysia
3. Cluster of Integrative Medicine, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Penang, Malaysia
4. Section of Bioengineering Technology, Universiti Kuala Lumpur, Malaysian Institute of Chemical and Bioengineering Technology, Melaka, Malaysia
5. Department of Fundamental and Applied Sciences, Universiti Teknologi Petronas, Perak, Malaysia