1. Department of Intensive Care, Clinic of Pulmonary MedicineDışkapı Yıldırım Beyazıt Research and Education Hospital Ankara Turkey
2. Department of Pulmonary Medicine, Subdivision of Allergy and ImmunologyErciyes University School of Medicine Kayseri Turkey
3. Department of Rheumatology, Clinic of Internal MedicineAnkara Research and Training Hospital Ankara Turkey
4. Department of RadiologyGazi University School of Medicine Ankara Turkey
5. Department of Chest DiseasesGazi University School of Medicine Ankara Turkey
6. Department of RheumatologyGazi University School of Medicine Ankara Turkey