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Subjects
- Efficiency, Organizational1
- Emergency Medical Services -- trends1
- Ethnicity1
- Health Status1
- Humans1
- Income -- statistics & numerical data1
- Insurance Coverage -- economics1
- Medicare -- economics[remove]2
- Medicare -- trends1
- Patient Admission1
- Racial Groups1
- Socioeconomic Factors1
- Time Factors1
- United States[remove]2
- Watchful Waiting -- economics1
- Watchful Waiting -- trends1