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Impact of misclassification of in vitro fertilisation in studies of folic acid and twinning: modelling using population based Swedish vital records

BMJ 2005; 330 doi: https://doi.org/10.1136/bmj.38369.437789.82 (Published 07 April 2005) Cite this as: BMJ 2005;330:815

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R J Berry, R Kihlberg, O Devine

Berry R J, Kihlberg R, Devine O. Impact of misclassification of in vitro fertilisation in studies of folic acid and twinning: modelling using population based Swedish vital records BMJ 2005; 330 :815 doi:10.1136/bmj.38369.437789.82

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Obstetrics and gynaecology