Affiliations:
1 Department of Pediatric Pulmonology; Selim Coremen Cystic Fibrosis Center, Marmara University Faculty of Medicine, Istanbul, Turkey.
2 Faculty of Medicine, Marmara University, Istanbul, Turkey
3 Department of Pediatric Pulmonology, Faculty of Medicine, Marmara University, Istanbul, Turkey
4 Medical Microbiology Department, Marmara University Faculty of Medicine, Istanbul