1. Department of Public Health, School of Public Health, Bushehr University of Medical Sciences, Bushehr, Iran
2. Iran University of Medical Sciences, Tehran, Iran
3. Shiraz University of Medical Sciences, Shiraz, Iran
4. Bushehr University of Medical Sciences, Bushehr, Iran
5. Tehran University of Medical Sciences, Tehran, Iran
6. Kerman University of Medical Sciences, Kerman, Iran
7. Health Unit, Faculty of Social Science, Tampere University, Tampere, Finland
8. Department of Epidemiology, School of Public Health, Bushehr University of Medical Sciences, Bushehr, Iran
9. The Persian Gulf Martyrs, Bushehr University of Medical Sciences, Bushehr, Iran