Acknowledgements
This paper was adapted from MSc dissertation, which was supported by Vice chancellor for research and Department of Nutrition in Faculty of Medicine, Mashhad University of Medical Sciences (code: 960787). So, we thank the authorities of this university for their cooperation. Also, we appreciate the patients and their companions. The support of Clinical Research Development Unit of Akbar Hospital (affliated to Mashhad University of Medical Sciences, Mashhad, Iran) in performing statistical analysis is also highly appreciated.