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Orton S, Bowker K, Cooper S, et al. Longitudinal cohort survey of women's smoking behaviour and attitudes in pregnancy: study methods and baseline data. BMJ Open 2014;4:e004915.
The final sentence was omitted from the Funding section. The full funding section should read:
“Funding This work was funded by the National Institute for Health Research (NIHR) under its Programme Grant for Health Research scheme (grant reference RP-PG-0109-10020). The views expressed are those of the authors and not necessarily those of the NHS, the NIHR or the Department Health.”