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Subjects
- Drug Users[remove]13
- HIV Infections -- prevention & control3
- Substance-Related Disorders3
- Anniversaries and Special Events2
- Germany2
- Needle Sharing -- adverse effects2
- New York City2
- Substance Abuse, Intravenous2
- Acquired Immunodeficiency Syndrome -- prevention & control1
- Athletes1
- Canada1
- Condoms1
- Drug Trafficking1
- Harm Reduction1
- Hypnotics and Sedatives -- administration & dosage1
- Illicit Drugs1
- Marijuana Smoking1
- Marijuana Use1
- Needle-Exchange Programs1
- New York1