1. Child and Adolescent Psychiatry Department, Başkent University Faculty of Medicine, Ankara, Turkey
2. Psychiatry Department, Başkent University Faculty of Medicine, Ankara, Turkey
3. Child and Adolescent Psychiatry Department, Sami Ulus Maternity and Children’s Health and Diseases Training and Research Hospital, Ankara, Turkey
4. Biostatistics Department, Başkent University Faculty of Medicine, Ankara, Turkey