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Subjects
- Disease Transmission, Infectious -- prevention & control2
- HIV Infections -- prevention & control2
- Homosexuality, Male2
- Nutritional Physiological Phenomena2
- Physical Fitness2
- Safe Sex2
- Accident Prevention1
- Acquired Immunodeficiency Syndrome -- prevention & control1
- Aging1
- Alcohol Drinking1
- Carcinogens -- toxicity1
- Child1
- Chromosome Mapping1
- Dental Care1
- Environmental Exposure -- adverse effects1
- Exercise1
- Genes1
- Health Promotion1
- Hodgkin Disease -- therapy1
- Hotlines1