sima garshasbi department of medical education, school of medicine, iran university of medical sciences, tehran, iran. and brain and spinal cord injury research center, neurosciences institute, tehran university of medical sciences, tehran, iran. hamidollah bahador department of medical education, school of medicine, iran university of medical sciences, tehran, iran. nahid fakhraei brain and spinal cord injury research center, neurosciences institute, tehran university of medical sciences, tehran, iran. abolfazl farbod headache research center, sina hospital, tehran university of medical sciences, tehran, iran. maryam mohammadi brain and spinal cord injury research center, neurosciences institute, tehran university of medical sciences, tehran, iran. and department of epidemiology and reproductive health, reproductive epidemiology research center, royan institute for reproductive biomedicine, acecr, tehran, iran. soleiman ahmady brain and spinal cord injury research center, neurosciences institute, tehran university of medical sciences, tehran, iran. and school of medical education, shahid beheshti university of medical sciences, tehran, iran.

R C Smith A A Marshall-Dorsey G G Osborn V Shebroe J S Lyles B E Stoffelmayr L F Van Egeren J Mettler K Maduschke J M Stanley J C Gardiner