1. Department of Chemical Technology, Erzurum Vocational Training Collage, Ataturk University, Erzurum, Turkey
2. Department of Chemistry, Faculty of Science, Hacettepe University, Ankara, Turkey
3. Department of Analytical Chemistry, Faculty of Pharmacy, Atatürk University, Erzurum, Turkey
4. Department of Dermatology, Faculty of Medicine, Atatürk University, Erzurum, Turkey