1. UPM-MAKNA Cancer Research Laboratory, Institute of Bioscience, University Putra Malaysia (UPM), Serdang, 43400 Selangor, Malaysia
2. Department of Chemistry, Faculty of Science, University Putra Malaysia (UPM), Serdang, 43400 Selangor, Malaysia
3. Department of Pharmacy, Faculty of Medicine Building, University of Malaya, 50603 Kuala Lumpur, Malaysia
4. Medical Research Center, Faculty of Medicine, Jazan University, P.O. Box 114, Jazan 45142, Saudi Arabia
5. College of Pharmacy, Qassim University, P.O. Box 2055, Buraydah 6800, Saudi Arabia
6. Department of Microbiology and Pathology, Faculty of Veterinary Medicine, University Putra Malaysia (UPM), Serdang, 43400 Selangor, Malaysia
7. Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia