International Journal of Preventive Medicine (Int J Prev Med)2008-7802112015080815641564ENDepartment of Neurology, Brain and Spinal Injury Research Center, Tehran University of Medical Sciences, Tehran, IranDepartment of Midwifery, Gonabad University of Medical Sciences, Gonabad, IranDepartment of Neurology, Women’s Hospital, Tehran University of Medical Sciences, Tehran University of Medical Sciences, Tehran, IranDepartment of Radiology, Zanjan University of Medical Sciences, Zanjan, IranDepartment of Radiology, Zanjan University of Medical Sciences, Zanjan, Iran20150808--http://ijpm.mui.ac.ir/index.php/ijpm/article/view/1564http://ijpm.mui.ac.ir/index.php/ijpm/article/download/1564/1854