1. Department of Internal Medicine, Division of Pulmonology, Imam Khomeini Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran;
2. Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran;
3. Asadabad School of Medical Sciences, Asadabad, Iran;
4. School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran;
5. Environmental and Occupational Hazards Control Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran;
6. Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran;
7. Abadan School of Medical Sciences, Abadan, Iran;
8. Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran;
9. Health Research Institute, Infectious and Tropical Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran;
10. Department of Environmental Health Engineering, School of Public Health and Environmental Technologies Research Center (ETRC), Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran