Signorello L, Han X, Cai Q, Cohen S, Cope E, Zheng W, et al. A prospective study of serum 25-hydroxyvitamin d levels and mortality among African Americans and non-African Americans. Am J Epidemiol. 2013;177:171-9 pubmed publisher
..These findings provide support for the hypothesis that vitamin D status may have an important influence on mortality for both African Americans and non-African Americans. ..
Johnson N, Dudbridge F, Orr N, Gibson L, Jones M, Schoemaker M, et al. Genetic variation at CYP3A is associated with age at menarche and breast cancer risk: a case-control study. Breast Cancer Res. 2014;16:R51 pubmed publisher
..These associations are likely mediated via an effect on circulating hormone levels. ..