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Protocol for the Smoking, Nicotine and Pregnancy (SNAP) trial: double-blind, placebo-randomised, controlled trial of nicotine replacement therapy in pregnancy

Tim Coleman*, Jim Thornton, John Britton, Sarah Lewis, Kim Watts, Michael WH Coughtrie, Clare Mannion, Neil Marlow and Christine Godfrey

BMC Health Services Research 2007, 7:2  doi:10.1186/1472-6963-7-2

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