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Combined vitamin D and calcium supplementation may reduce fracture risk in institutionalised older people but has uncertain role in cancer prevention

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  • Competing interests TJA and RMF have been principal investigators in clinical trials of and vitamin D supplementation, with and without calcium. RMF was also a member of the DIPART Group, which performed a meta-analysis of the antifracture efficacy of vitamin D supplementation. RMF has received speaker's honoraria from Shire Pharmaceuticals, who have also provided an educational travel grant to TJA.