Wang, X.G., Wang, Z.Q., Tong, W.M., Shen, Y., 2007. PARP1 Val762Ala polymorphism reduces enzymatic activity. Biochem. Biophys. Res. Commun. 354 (1), 122–126. Wörns, M.A., Victor, A., Galle, P.R., Höhler, T., 2006. Genetic and environmental contributions to plasma C-reactive protein and interleukin-6 levels – a study in twins. Genes Immun. 7 (7), 600–605.