1. Cancer Research Laboratory, Institute of Bioscience, University Putra Malaysia, 43400 Serdang, Malaysia
2. Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
3. Department of Molecular Immunology, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
4. Department of Chemistry, Faculty of Science, University Putra Malaysia, 43400 Serdang, Malaysia
5. Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
6. Medical Research Center, Faculty of Medicine, Jazan University, Jazan 82621, Saudi Arabia