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Subjects
- Cooperative Behavior[remove]3
- Humans2
- United States2
- Aging1
- Community Health Planning1
- Delivery of Health Care -- organization & administration1
- Global Health1
- Health Services for the Aged1
- Health Transition1
- History, 20th Century1
- International Agencies1
- Public Health1
- Public Health Administration -- history1
- Public Health Practice1
- United States Public Health Service1