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Postpartum return to smoking: who is at risk and when.
Mullen PD, Richardson MA, Quinn VP, Ershoff DH. Mullen PD, et al. Am J Health Promot. 1997 May-Jun;11(5):323-30. doi: 10.4278/0890-1171-11.5.323. Am J Health Promot. 1997. PMID: 10167366 Clinical Trial.