1. Department of Pediatric Metabolism Faculty of Medicine, Ankara University, Ankara, Turkey
2. Department of Clinical Biochemistry, Inonu University Faculty of Medicine, Malatya, Turkey
3. Department of Clinical Biochemistry, Erzincan University Faculty of Medicine, Erzincan, Turkey
4. Department of Biostatistics, Faculty of Medicine, Cukurova University, Adana, Turkey
5. Department of Clinical Biochemistry, Yıldırım Beyazıt University Faculty of Medicine, Ankara, Turkey