1. Pharmaceutical Chemistry Department College of Pharmacy King Saud University Riyadh Saudi Arabia
2. Pharmacognosy Department College of Pharmacy King Saud University Riyadh Saudi Arabia
3. Department of Basic Medical Sciences Kulliyyah of Medicine International Islamic University Malaysia Kuantan Malaysia
4. Department of Pharmacognosy Faculty of Pharmacy Mansoura University Mansoura Egypt
5. Biochemistry Department Science College King Saud University Riyadh Saudi Arabia