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Lips, P; Hosking, D; Lippuner, K; Norquist, J M; Wehren, L; Maalouf, G; Ragi-Eis, S; Chandler, J (2006). The prevalence of vitamin D inadequacy amongst women with osteoporosis: an international epidemiological investigation. Journal of internal medicine, 260(3), pp. 245-54. Oxford: Blackwell Scientific Publications 10.1111/j.1365-2796.2006.01685.x
