Barkovich, A. ., Good, W. V., Koch, T. S., & Berg, B. . (1993). Mitochondrial disorders: analysis of their clinical and imaging characteristics. American Journal of Neuroradiology, 14(5), 1119-37. Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/pmc8332760/ (Original work published 1993)