1. Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
2. Department of Pharmacognosy, Faculty of Pharmacy, Sana'a University, P.O. Box, 33039 Sana'a, Yemen
3. Department of Pharmacognosy and Medicinal Chemistry, Faculty of Pharmacy, Taibah University, Al Madinah Al Munawwarah 41477, Saudi Arabia
4. Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt