1. Department of Medical Microbiology, Başkent University Faculty of Medicine, Ankara, Turkey.
2. Department of Medical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey.
3. Department of Pediatric Pulmonology, Hacettepe University Faculty of Medicine, Ankara, Turkey.
4. Department of Medical Microbiology, İnonü University Faculty of Medicine, Malatya, Turkey.
5. Pediatric Infectious Diseases Unit, Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey.