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Subjects
- United States9,984
- Physicians3,609
- Military Personnel2,337
- Nurses2,066
- Acquired Immunodeficiency Syndrome -- prevention & control1,999
- Medicine1,599
- American Civil War1,519
- Nonprescription Drugs1,178
- Hospitals, Military1,176
- Child1,155
- World War II1,138
- United States. Army1,050
- Condoms981
- Public Health978
- Homeopathy938
- Veterans935
- New York914
- Safe Sex844
- Hygiene808
- California788
