1. Health Policy Research Center, Institute of Health, Department of Public Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
2. Department of Aging, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
3. Department of Public Health, School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
4. Department of Community Medicine, School of Medicine, Health Behavior Science Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
5. Nutrition Research Center, Department of Public Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran