1. Department of Child and Adolescent Psychiatry, Hacettepe University Faculty of Medicine, Sıhhiye, Ankara, Turkey
2. Department of Physiology, Hacettepe University Faculty of Medicine, Sıhhiye, Ankara, Turkey
3. Division of Adolescent Medicine, Department of Pediatrics, Hacettepe University Faculty of Medicine, Sıhhiye, Ankara, Turkey
4. Department of Biostatistics, Hacettepe University Faculty of Medicine, Sıhhiye, Ankara, Turkey