1 Department of Occupational Health Engineering, Research Center for Environmental Pollutants, Faculty of Health, Qom University of Medical Sciences, Qom, Iran. Jalilianh@hotmail.com.
2 Swiss Tropical and Public Health Institute, Kreuzstrasse 2, CH-4123, Allschwil, Switzerland.
3 University of Basel, Petersplatz 1, CH-4003, Basel, Switzerland.