Research

Birth order of twins and risk of perinatal death related to delivery in England, Northern Ireland, and Wales, 1994-2003: retrospective cohort study

BMJ 2007; doi: https://doi.org/10.1136/bmj.39118.483819.55 (Published 02 March 2007) Cite this as: BMJ 2007;:bmj;bmj.39118.483819.55v1

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