Health Policy Research Center, Institute of Health, Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran. Health Sciences Research Center, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran. Health Policy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Indigenous and Global Health Research, Department of Medicine, University of Alberta, Edmonton, Canada. Petroleum Industry Health Organization, Tehran, Iran. Department of Gynecology and Obstetrics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Department of Gynecology and Obstetrics, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran. Endocrinology and Metabolism Research Center, Arak University of Medical Sciences, Arak, Iran. Department of Pharmaceutics, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran. Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.