1. Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University, Cairo 11566, Egypt
2. Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, 20014 Turku, Finland
3. Department of Pharmacology, Theodor Bilharz Research Institute, Giza 12411, Egypt
4. Department of Pathology, School of Medicine, Stanford University, Stanford, CA 94305, USA
5. Department of Pharmacology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
6. Center for Emerging Infectious Diseases, Gifu University, 1-1 Yanagido, Gifu 501-1194, Japan