The D2-D3 Study: comparing the efficacy of 15μg/d vitamin D2 vs. D3 in raising vitamin D status in both South Asian and Caucasian women, and the ethical implications of placebo treatment,

L. Wilson, K. Hart, R. Elliott, C. P. Smith, G. Bucca, S. Penson, G. Chope, E. Hypponen, J. Berry, S. Lanham-New1 and L. Tripkovic, Proceedings of the Nutrition Society (2015), 74 (OCE1)