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Subjects
- Emergency Medical Services[remove]85
- United States23
- Humans21
- Health Planning Support13
- Regional Medical Programs13
- Program Evaluation12
- Transportation of Patients11
- World Health Organization11
- Organizational Policy10
- Delivery of Health Care8
- Health Maintenance Organizations8
- Ambulances6
- Area Health Education Centers6
- Emergency Service, Hospital6
- Kidney Diseases6
- Pennsylvania6
- California5
- Cancer Care Facilities5
- Community Health Services5
- Emergency Treatment5