1. Maçka Vocational School; Karadeniz Technical University; Trabzon 61080 Turkey
2. Department of Chemistry; Karadeniz Technical University; Trabzon 61080 Turkey
3. Espiye Vocational School; Giresun University; Giresun Turkey
4. Sağlik Hizmetleri M.Y.O.; Karadeniz Technical University; Trabzon 61080 Turkey