Letter by Begg et al regarding article, "The effects of vitamin d supplementation on physical function and quality of life in older heart failure patients: a randomized controlled trial".

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@article{Begg2010LetterBB, title={Letter by Begg et al regarding article, "The effects of vitamin d supplementation on physical function and quality of life in older heart failure patients: a randomized controlled trial".}, author={Gordon A. Begg and John Gf Cleland and Klaus K. A. Witte}, journal={Circulation. Heart failure}, year={2010}, volume={3 4}, pages={e24; author reply e25} }