- Paraoxonase 2 gene C311S polymorphism is associated with a risk of large vessel disease stroke in a Polish population. Slowik, A., Wloch, D., Szermer, P., Wolkow, P., Malecki, M., Pera, J., Turaj, W., Dziedzic, T., Klimkowicz-Mrowiec, A., Kopec, G., Figlewicz, D.A., Szczudlik, A. Cerebrovasc. Dis. (2007)