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Flaherty, S.P., Payne, D. & Norman, R.J. What Is the Best Strategy for Using Embryos and Presenting Results in Assisted Reproductive Technology? A Strategy for Valid Comparisons of Results. J Assist Reprod Genet 16, 471–473 (1999). https://doi.org/10.1023/A:1020594815171
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DOI: https://doi.org/10.1023/A:1020594815171