Research Center for Health Sciences, Institute of Health, Department of Environmental Health Engineering, School of Health, Shiraz University of Medical Science, Shiraz, Iran. Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran. Electronic address: shv_ghareghani@yahoo.com. Nutrition Research Center, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran. Department of Behavioral and Environmental Health, School of Public Health Initiative, Jackson State University, Jackson, MS, USA.