Department of Nutrition, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran. Department of Clinical Biochemistry, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran. Faculty of Medical Sciences, Department of Clinical Biochemistry, Tarbiat Modares University, Tehran, Iran. Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.