1. Pulmonary Division, Emam Khomeini Hospital; Ardabil University of Medical Sciences; Ardabil Iran
2. Department on Internal Medicine, Emam Khomeini Hospital; Ardabil University of Medical Sciences; Ardabil Iran
3. Lung Disease Research Center; Mashhad University of Medical Sciences; Mashhad Iran
4. Tuberculosis and Lung Disease Research Center; Tabriz University of Medical Sciences; Tabriz Iran