1 Shahid Beheshti University of Medical Sciences, Imam Hossein Hospital, Tehran, Iran.
2 Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran.
3 Shahid Beheshti University of Medical Sciences, Modarres Hospital, Tehran, Iran.
4 Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address: mehrdadbakhshayesh@yahoo.com.
5 Department of internal medicine, Tehran University of Medical Sciences, Tehran, Iran.
6 Shahid Beheshti University of Medical Sciences, Tehran, Iran.
7 Shahid Beheshti University of Medical sciences, Shohada Tajrish Hospital, Tehran, Iran.