Author's reply

BMJ 1996; 312 doi: https://doi.org/10.1136/bmj.312.7038.1100b (Published 27 April 1996) Cite this as: BMJ 1996;312:1100
  1. C H Gravholt
  1. Research fellow Medical Department M (Diabetes and Endocrinology), Aarhus Kommunehospital, University Hospital of Aarhus, DK-8000 Aarhus C, Denmark

    EDITOR,—Quality assessment sometimes yields unpleasant results or, as in the case of our study, unpleasant questions. The Danish Cytogenetic Central Register gives a unique opportunity to assess the validity of prenatal screening, although the information is incomplete.

    Both Claes Lundsteen and colleagues and Johanne M Hahnemann and Lars O Vejerslev criticise our study for mixing “pure” Turner's karyotypes with mosaicisms. Table 1 therefore shows the results for 45,X karyotypes separately from those …

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