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Subjects
- United States[remove]23
- Humans8
- Hospitals, Military4
- Military Personnel4
- World War I4
- Libraries, Medical -- history3
- Certification2
- Education, Medical -- standards2
- Government Programs2
- Health Care Costs -- statistics & numerical data2
- History, 19th Century2
- History, 20th Century2
- Insurance, Long-Term Care -- economics2
- Licensure2
- Long-Term Care -- economics2
- National Library of Medicine (U.S.)2
- Acquired Immunodeficiency Syndrome -- economics1
- Acquired Immunodeficiency Syndrome -- therapy1
- Aged1
- American Civil War1