1. Department of Pediatrics, Division of Pediatric Infectious Diseases, Pendik Training and Research Hospital, Marmara University Medical Faculty, Mimar Sinan Cad No. 41, Fevzi Cakmak Mah, Ust kaynarca-Pendik, 34899 Istanbul, Turkey
2. Department of Otorhinolaryngology, Pendik Training and Research Hospital, Marmara University Medical Faculty, Mimar Sinan Cad No. 41, Fevzi Cakmak Mah, Ust kaynarca-Pendik, 34899 Istanbul, Turkey
3. Marmara University Medical Faculty, Department of Medical Microbiology, 34899 Istanbul, Turkey