1. Chemistry Department, Faculty of Science, Minia University, El Minia, 61519 Egypt
2. Unit of Occupational of Safety and Health, Administration Office of Minia University, El-Minia 61519, Egypt
3. Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
4. Department of Neurology, Ulm University, Ulm, Germany
5. Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
6. Institute of Biological and Chemical Systems, IBCS-FMS, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
7. Department of Chemistry, University of Jyväskylä, PO Box 35, 40014 Jyväskylä, Finland
8. Department of Chemistry, University of Helsinki, PO Box 55, A. I. Virtasen Aukio 1, 00014 Helsinki, Finland