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