1. Chemistry Department
2. Faculty of Science
3. Assiut University
4. Assiut
5. Egypt
6. Department of Clinical Pharmacy Research
7. Institute for Research and Medical Consultation
8. Imam Abdulrahman Bin Faisal University
9. Dammam 31441
10. Saudi Arabia
11. Anal. Chem. – Elektroanalytik & Sensorik
12. Ruhr-Universitat Bochum
13. D-44780 Bochum
14. Germany