1. Institute of Pharmaceutical Biology and Biotechnology Heinrich-Heine University Universitätsstrasse 1 D-40225 Düsseldorf Germany
2. Marine Analytical Chemistry Chemistry Department Marine Science Station The University of Jordan Amman Jordan
3. Department of Pharmacognosy Faculty of Pharmacy Mansoura University 35516 Mansoura Egypt
4. Department of Pharmaceutical Chemistry Faculty of Pharmacy The British University in Egypt (BUE) Al-Sherouk City Cairo-Suez Desert Road 11837 Egypt
5. Institute of Physiological Chemistry University Medical Center of the Johannes Gutenberg University Mainz 55128 Mainz Germany
6. Department of Pharmacognosy Faculty of Pharmacy Ain-Shams University, Abbasia 11566 Cairo Egypt
7. Department of Pharmacognosy Faculty of Pharmacy Sinai University Ismailia Egypt