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Letters to the editor
Timing of emergency IUD fitting
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We wish to thank Dr Davies1 for raising an issue we were not able to address in our original letter2 due to space limitations. The issue with emergency contraception intrauterine devices (EC IUDs) is slightly different. An EC IUD has to be fitted prior to implantation. This is a process that starts no sooner than 6 days after fertilisation, and fertilisation cannot happen prior to …
Footnotes
Competing interests None.