Epidemiology of malocclusion in 12 year old Winnipeg school children.
D001294:Attitude to Health; D002170:Canada; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000145:classification / Q000453:epidemiology* / Q000628:therapy; D009971:Orthodontics, Corrective; D010781:Photography; D012494:Sampling Studies; D012737:Sex Factors; D012959:Socioeconomic Factors