[1] Tehran University of Medical Sciences,Occupational Sleep Research Center, Otorhinolaryngology Head and Neck Surgery Department
[2] Imam Khomeini Educational Complex Hospital,Occupational Sleep Research Center
[3] Valiasr Hospital,Health Metrics Research Center
[4] Tehran University of Medical Sciences,Epidemiology and Biostatistics Department, School of Public Health
[5] Tehran University of Medical Sciences,undefined
[6] Iranian Institute for Health Sciences Research,undefined
[7] ACECR,undefined
[8] Tehran University of Medical Sciences,undefined