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Subjects
- United States8
- Humans3
- Insurance, Health2
- Research2
- Academic Medical Centers -- organization & administration1
- Acquired Immunodeficiency Syndrome1
- Age Factors1
- Aging1
- Asthma -- epidemiology1
- Asthma -- history1
- Asthma -- prevention & control1
- Blood Transfusion1
- Censuses1
- Child1
- Child Health Services -- economics1
- Data Collection1
- Disease Outbreaks -- prevention & control1
- Dissent and Disputes1
- Documentation -- standards1
- Education, Medical1