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Subjects
- United States9,950
- Physicians3,602
- Military Personnel2,333
- Nurses2,066
- Acquired Immunodeficiency Syndrome -- prevention & control1,999
- Medicine1,577
- American Civil War1,517
- Nonprescription Drugs1,177
- Hospitals, Military1,175
- Child1,146
- World War II1,138
- United States. Army1,047
- Condoms981
- Public Health972
- Veterans933
- Homeopathy921
- New York910
- Safe Sex844
- Hygiene800
- California785
