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Subjects
- United States239
- World War I147
- Hygiene132
- Hospitals, Military62
- France55
- Military Medicine53
- Military Personnel49
- Physicians48
- Physiological Phenomena45
- Medicine44
- New York44
- Child36
- Nonprescription Drugs36
- New York City34
- Sex Education34
- Sexual Behavior34
- Health Behavior33
- Pharmaceutical Preparations33
- Brazil32
- Sanitation32
