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Subjects
- Cross Infection -- economics[remove]1
- Cross Infection -- epidemiology1
- Cross Infection -- mortality1
- Hospitals1
- Humans1
- Patient Safety1
- Pennsylvania1
- Pneumonia -- economics[remove]1
- Pneumonia -- epidemiology1
- Pneumonia -- etiology1
- Pneumonia -- mortality1
- Pneumonia, Ventilator-Associated -- economics1
- Pneumonia, Ventilator-Associated -- epidemiology1
- Pneumonia, Ventilator-Associated -- mortality1
- United States1