Naghshineh, H., S. M. M. Hojjati, A. A. Khatir, P. Saadat, and A. A. Ahangar. “Can Environmental Factors Increase the Risk of Multiple Sclerosis? A Narrative Review”. Biomedical Research and Therapy, Vol. 6, no. 12, Dec. 2019, pp. 3513-7, doi:10.15419/bmrat.v6i12.579.