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Bolland, M.J., Grey, A. & Reid, I.R. Re: The calcium scare: what would Austin Bradford Hill have thought?. Osteoporos Int 22, 3079–3080 (2011). https://doi.org/10.1007/s00198-011-1783-y
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DOI: https://doi.org/10.1007/s00198-011-1783-y