1. Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
2. Medical Research Centre, Jazan University, Jazan, 11420, Kingdom of Saudi Arabia
3. Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, P.O. Box 6800, Buraidah, 51452, Kingdom of Saudi Arabia