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A second comment on the article by Reid et al. can be found at doi: 10.1007/s00198-008-0755-3; a reply to this letter is available at http://dx.doi.org/10.1007/s00198-008-0756-2.
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Tang, B.M.P. Does calcium supplementation really cause more hip fractures?. Osteoporos Int 20, 833–834 (2009). https://doi.org/10.1007/s00198-008-0758-0
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DOI: https://doi.org/10.1007/s00198-008-0758-0