[1] Baqiyatallah Univ Med Sci, Student Res Comm, Tehran, Iran
[2] Shahid Beheshti Univ Med Sci, Sch Publ Hlth & Safety, Dept Occupat Hlth & Safety, Tehran, Iran
[3] Shahid Beheshti Univ Med Sci, Res Inst Hlth Sci & Environm, Environm & Occupat Hazards Control Res Ctr, Tehran, Iran
[4] Baqiyatallah Univ Med Sci, Fac Hlth, Dept Occupat Hlth Engn, Tehran, Iran