"Hooked" or "sick": addicts' perceptions of their addiction.
D000328:Adult; D000367:Age Factors; D005260:Female; D006556:Heroin Dependence / Q000523:psychology*; D006801:Humans; D008297:Male; D008393:Marriage; D008875:Middle Aged; D012649:Self Concept; D012737:Sex Factors; D011795:Surveys and Questionnaires