British users of opiate-type drugs: a follow-up study.
D011307:Drug Prescriptions; D005260:Female; D005500:Follow-Up Studies; D006556:Heroin Dependence / Q000534:rehabilitation*; D006801:Humans; D008019:Life Style; D008131:London; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D009017:Morbidity; D014478:Unemployment
D008691:Methadone