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Subjects
- Substance Abuse, Intravenous -- complications[remove]6
- HIV Infections -- prevention & control3
- Acquired Immunodeficiency Syndrome -- prevention & control2
- Condoms2
- Needle Sharing -- adverse effects2
- Anniversaries and Special Events1
- Deutsche AIDS-Hilfe e.V.1
- Drug Users1
- Germany1
- Health Knowledge, Attitudes, Practice1
- Health Promotion1
- Hepatitis -- prevention & control1
- Heroin Dependence1
- Illicit Drugs1
- Safe Sex1
- Self-Help Groups1
- Substance Abuse, Intravenous -- prevention & control1