1. Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey
2. Pediatric Infectious Diseases, Hacettepe University Faculty of Medicine, Ankara, Turkey
3. Pediatric Chest Diseases, Hacettepe University Faculty of Medicine, Ankara, Turkey
4. Department of Radiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
5. Department of Pathology, Hacettepe University Faculty of Medicine, Ankara, Turkey