Ahmed, Iman Emad, et al. “Comparison of Proton Density MRI and T2-Weighted Fast Echo for The Detection of Cervical Spinal Cord Multiple Sclerosis Lesions”. Journal of the Faculty of Medicine Baghdad, vol. 60, no. 4, May 2019, pp. 195-01, https://doi.org/10.32007/jfacmedbagdad.604159.