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- Public health101
- Children87
- Health and hygiene70
- Health education63
- Health literacy63
- School children60
- Medicine, Preventive52
- Prevention51
- Sexually transmitted diseases48
- Communicable diseases31
- Syphilis27
- Patent medicines25
- World War, 1914-191825
- World War, 1939-194523
- Nutrition22
- Physicians20
- Sick persons20
- Tuberculosis18
- Food supply17
- Infants17