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Addiction (Abingdon, England)|March 1, 1994
Transitions in patterns of heroin administration: a study of heroin chasers and heroin injectorsP Griffiths, M Gossop, B Powis, et al.International Journal of STD & AIDS|March 1, 1994
Heterosexual vaginal and anal intercourse amongst London heroin and cocaine usersJ Strang, B Powis, P Griffiths, et al.Addiction (Abingdon, England)|December 1, 1993
Reaching hidden populations of drug users by privileged access interviewers: methodological and practical issuesP Griffiths, M Gossop, B Powis, et al.Drug and Alcohol Review|January 1, 1994
Multiple risks for HIV and hepatitis B infection among heroin usersM Gossop, B Powis, P Griffiths, et al.Substance Use & Misuse|April 1, 1996
The differences between male and female drug users: community samples of heroin and cocaine users comparedB Powis, P Griffiths, M Gossop, et al.British Journal of Addiction|March 1, 1992
Extent and nature of transitions of route among heroin addicts in treatment--preliminary data from the Drug Transitions StudyP Griffiths, M Gossop, B Powis, et al.British Journal of Addiction|November 1, 1992
Severity of dependence and route of administration of heroin, cocaine and amphetaminesM Gossop, P Griffiths, B Powis, et al.AIDS Care|January 1, 1995
Female prostitutes in south London: use of heroin, cocaine and alcohol, and their relationship to health risk behavioursM Gossop, B Powis, P Griffiths, et al.AIDS Care|January 1, 1993
Severity of heroin dependence and HIV risk. II. Sharing injecting equipmentM Gossop, P Griffiths, B Powis, et al.Drug and Alcohol Review|January 1, 1995
Heterosexual anal intercourse, health risks and drug use: a review with special attention to drug usersB Powis, P Griffiths, M Gossop, et al.Pageof 47