title: Bedtimes and sleep duration in relation to smoking behaviour in 14-year-old English schoolchildren.
authors.forename: I D
authors.initials: ID
authors.lastname: Macgregor
authors.forename: J W
authors.initials: JW
authors.lastname: Balding
mesh_terms: D000293:Adolescent; D005260:Female; D006801:Humans; D008297:Male; D012890:Sleep; D012907:Smoking / Q000009:adverse effects*; D012923:Social Class; D011795:Surveys and Questionnaires; D006113:United Kingdom