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Janssen, J.A.M.J.L., Lamberts, S.W.J. Is the measurement of free IGF-I more indicative than that of total IGF-I in the evaluation of the biological activity of the GH/IGF-I axis?. J Endocrinol Invest 22, 313–315 (1999). https://doi.org/10.1007/BF03343563
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DOI: https://doi.org/10.1007/BF03343563