1. Kayseri Training and Research Hospital, Department of Pulmonary Medicine, Kayseri, Turkey
2. Kayseri Medical Palace Hospital, Department of Pulmonary Medicine, Kayseri, Turkey
3. Department of Histology, School of Medicine, Erciyes University, Kayseri
4. Department of Pulmonary Medicine, School of Medicine, Erciyes University, Kayseri, Turkey