Genetic variation in mitotic regulatory pathway genes is associated with breast tumor grade. by Purrington, K, Slettedahl, S, Bolla, M, Michailidou, K, Czene, K, Nevanlinna, H, Bojesen, SE, Andrulis, I, Cox, A, Hall, P, Carpenter, J, Yannoukakos, D, Haiman, C, Fasching, P, Mannermaa, A, Winqvist, R, Brenner, H, Lindblom, A, Chenevix-Trench, G, Benitez, J, Swerdlow, A, Kristensen, V, Guénel, P, Meindl, A, Darabi, H