1. Department of Pharmaceutical Chemistry Faculty of Pharmacy University of Malaya Kuala Lumpur 50603 Malaysia
2. Department of Pharmacology Faculty of Medicine University of Malaya Kuala Lumpur 50603 Malaysia
3. Department of Diagnostic and Allied Health Sciences Faculty of Health and Life Sciences Management and Science University Shah Alam Selangor 40100 Malaysia
4. School of Medicine Faculty of Health and Medical Sciences Taylor's University Subang Jaya Selangor 47500 Malaysia
5. School of Biosciences Faculty of Health and Medical Sciences Taylor's University Subang Jaya Selangor 47500 Malaysia