1 Chronic Respiratory Disease Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
2 Chronic Respiratory Disease Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Otolaryngology Head and Neck Surgery, Masih Daneshvari Hospital, Neyavran, Darabad, Tehran, Iran.
3 Chronic Respiratory Disease Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Otolaryngology Head and Neck Surgery, Masih Daneshvari Hospital, Neyavran, Darabad, Tehran, Iran. Electronic address: mahboob76181@yahoo.com.