1. Department of Pediatric Rheumatology, Hacettepe University Faculty of Medicine, Ankara 06230, Turkey
2. Department of Biostatistics, Hacettepe University Faculty of Medicine, Ankara 06230, Turkey
3. Pediatric Intensive Care Medicine, Life Support Center, Hacettepe University Faculty of Medicine, Ankara 06230, Turkey
4. Department of Pediatric Cardiology, Hacettepe University Faculty of Medicine, Ankara 06230, Turkey
5. Department of Pediatric Infectious Diseases, Hacettepe University Faculty of Medicine, Ankara 06230, Turkey