title: Are there socioeconomic differentials in under-reporting of smoking in pregnancy?
authors.forename: H
authors.initials: H
authors.lastname: Graham
authors.forename: L
authors.initials: L
authors.lastname: Owen
mesh_terms: D000293:Adolescent; D000328:Adult; D003625:Data Collection; D004522:Educational Status; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology*; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology*; D012923:Social Class; D012959:Socioeconomic Factors