1. Chronic Respiratory Diseases Research Center (CRDRC), National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
2. Behavioral Disease Counseling Center, Marvdasht Health Center, Shiraz University of Medical Sciences, Shiraz, Iran
3. Department of Microbiology, Shiraz Branch, Islamic Azad University, Shiraz, Iran
4. Critical Care Department, Farhikhtegan Hospital, Tehran Medical Branch, Islamic Azad University, Tehran, Iran