Papers
Impact of misclassification of in vitro fertilisation in studies of folic acid and twinning: modelling using population based Swedish vital records
BMJ 2005; doi: https://doi.org/10.1136/bmj.38369.437789.82 (Published 18 February 2005) Cite this as: BMJ 2005;:bmj;bmj.38369.437789.82v1This is a PDF-only article. The first page of the PDF of this article appears above.