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- History24
- history9
- Medicine6
- Children4
- Health and hygiene4
- Pediatrics4
- Nursing3
- Biography2
- History of Medicine, 19th Cent2
- History of Medicine, 20th Cent2
- History of Medicine, Modern2
- Internal Medicine2
- Internal medicine2
- National Cancer Institute (U.S.)2
- National Institute of Mental Health (U.S.)2
- National Institutes of Health (U.S.)2
- Research2
- Self Medication2
- Self medication2
- Social medicine2