1. Department of Public Health, Yıldırım Beyazıt University, Ankara, Turkey
2. Department of Biochemistry, Occupational Diseases Hospital, Ankara, Turkey
3. Department of Biochemistry, Atatürk Educational and Research Hospital, Ankara, Turkey
4. Department of Pharmacology, Occupational Diseases Hospital, Ankara, Turkey
5. Department of Family Medicine, Occupational Diseases Hospital, Ankara, Turkey
6. Department of Chemical Engineering and Bioengineering Division, Hacettepe University, Ankara, Turkey
7. Department of Biochemistry, Yıldırım Beyazıt University Medical Faculty, Ankara, Turkey