1. Faculty of Pharmacy and Biotechnology, Department of Pharmaceutical Chemistry; German University in Cairo; Cairo Egypt
2. Drug Discovery Research Center, Mitchell Cancer Institute; University of South Alabama; Mobile Alabama USA
3. Department of Pharmacy, Pharmaceutical and Medicinal Chemistry; Saarland University; Saarbrücken Germany
4. Department of Drug Design and Optimization; Helmholtz Institute for Pharmaceutical Research Saarland (HIPS); Saarbrücken Germany