Document Type : Letter to Editor
Authors
1 Student Research Committee, Department of Occupational Health Engineering and Safety, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2 Department of Occupational Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
3 Department of Social Medicine, Medical School, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Main Subjects
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