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HIV Infections
Sexually Transmitted Diseases
Acquired Immunodeficiency Syndrome
Sexual Behavior
Male Homosexuality
Risk-Taking
Condoms
Questionnaires
Patient Acceptance of Health Care
Unsafe Sex
Attitude to Health
Health Knowledge, Attitudes, Practice
Intravenous Substance Abuse
Bisexuality
Sexual Partners
London
Scotland
Great Britain
Risk Factors
Cross-Sectional Studies
Co-Publications
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5
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