Bias in the reported incidence of smoking by children.
D000293:Adolescent; D000294:Adolescent Behavior; D002648:Child; D002652:Child Behavior; D003625:Data Collection / Q000379:methods*; D004812:Epidemiologic Methods; D005190:Family; D005260:Female; D006801:Humans; D008297:Male; D012907:Smoking; D006113:United Kingdom