It was a wonder drug given to pregnant women on the NHS for nearly four decades, until it was banned in the 1970s for causing irreversible harm to their unborn children.
Yet that devastating damage has continued to pass through the generations. And now the women whose lives have been ruined are seeking justice.
But how many are there and will their health problems be passed on forever? Social Affairs Correspondent Sarah Corker tells Daniel Hewitt what you need to know.
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