- Epidemiology of A3243G, the mutation for mitochondrial encephalomyopathy, lactic acidosis, and strokelike episodes: prevalence of the mutation in an adult population. Majamaa, K., Moilanen, J.S., Uimonen, S., Remes, A.M., Salmela, P.I., Kärppä, M., Majamaa-Voltti, K.A., Rusanen, H., Sorri, M., Peuhkurinen, K.J., Hassinen, I.E. Am. J. Hum. Genet. (1998)