1. Department of Chest Diseases, Faculty of Medicine, Dumlupınar University, 43100 Kütahya, Turkey
2. Department of Chest Diseases, İstanbul Florence Nightingale Hospital, 34381 Istanbul, Turkey
3. Department of Chest Diseases, Faculty of Medicine, Karabük University, 78100 Karabük, Turkey
4. Department of Chest Diseases, Merzifon Karamustafa Paşa State Hospital, 05300 Amasya, Turkey
5. Department of Chest Diseases, Yedikule Chest Diseases and Thoracic Surgery Training and Research Hospital, 34020 Istanbul, Turkey