Genetic associations in the vitamin D receptor and colorectal cancer in African Americans and Caucasians.
Kupfer SS, Anderson JR, Ludvik AE, Hooker S, Skol A, Kittles RA, Keku TO, Sandler RS, Ruiz-Ponte C, Castellvi-Bel S, et al. PLoS One. 2011; 6(10):e26123. Epub 2011 Oct 27.