1. Department of Pharmacology, Faculty of Pharmacy, University of Medical Sciences and Technology, Khartoum, Sudan
2. Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Medical Sciences and Technology, Khartoum, Sudan
3. Department of Pharmacognosy, Faculty of Pharmacy, University of Medical Sciences and Technology, Khartoum, Sudan
4. Department of Clinical Pharmacy, Faculty of Pharmacy, University of Medical Sciences and Technology, Khartoum, Sudan