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A second comment on the article by Reid et al. can be found at doi:10.1007/s00198-008-0758-0; a reply to both comments can be found at doi:10.1007/s00198-008-0756-2
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Prince, R.L., Nordin, B.E.C. Comment on Reid et al.: Effect of calcium supplementation on hip fractures. Osteoporos Int 20, 831–832 (2009). https://doi.org/10.1007/s00198-008-0755-3
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DOI: https://doi.org/10.1007/s00198-008-0755-3