title: Schoolchildren who tattoo themselves.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D006509:Hepatitis B / Q000635:transmission; D006801:Humans; D008297:Male; D008875:Middle Aged; D013653:Tattooing / Q000009:adverse effects*; D006113:United Kingdom