%0 Journal Article %T Divergent trends in maternal cigarette smoking during pregnancy: United States 1990–99 %A Ananth, Cande V. %A Kirby, Russell S. %A Kinzler, Wendy L. %J Paediatric & Perinatal Epidemiology %V 19 %N 1 %@ 0269-5022 %D 2005-01-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve