1. Centre of Applied Science, Shiraz University of Medical Sciences, Shiraz, Iran, Tel./Fax:
2. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, Tel. ; Fax:
3. Department of Environmental Health Engineering, Mamassani Higher Education Complex for Health, Shiraz University of Medical Sciences, Shiraz, Iran, Tel. ; Fax:
4. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, Tel. ; Fax: +98 21 66462267
5. Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Hasan Rahmani, Ahvaz, Iran, Tel. ; Fax: