1. Department of Pharmaceutical Technology, Faculty of Pharmacy, Universiti Malaya, Kuala Lumpur 50603, Malaysia
2. INHART, International Islamic University Malaysia, Jalan Gombak, Kuala Lumpur 53100, Malaysia
3. Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universiti Malaya, Kuala Lumpur 50603, Malaysia
4. Center for Natural Products Research and Drug Discovery (CENAR), Universiti Malaya, Kuala Lumpur 50603, Malaysia
5. School of Pharmacy, Queen’s University Belfast, Belfast BT9 7BL, UK