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Subject
- Public health21,524
- Medical care17,260
- Health and hygiene13,483
- Law and legislation10,394
- Medicine9,560
- Prevention9,401
- History9,375
- Health9,372
- Health aspects8,510
- Research8,145
- Diseases7,336
- Mental health6,216
- Women5,761
- Health insurance5,632
- Treatment5,090
- Older people5,028
- Government policy4,985
- United States4,693
- Children4,639
- Medicare4,542