1. Department of Chemistry; Faculty of Science; Universiti Putra Malaysia; Serdang Selangor Malaysia
2. Department of Chemistry; Faculty of Science; Universiti Teknologi Malaysia; Johor Bahru Johor Malaysia
3. Integrative Medicine Cluster; Advanced Medical and Dental Institute (AMDI); Universiti Sains Malaysia; Kepala Batas Penang Malaysia
4. Faculty of Applied Sciences; Universiti Teknologi MARA; Shah Alam Selangor Malaysia