Jonathan Freeman, Donald A. Goldmann and John E. McGowan, Jr. Most information in hospital epidemiology comes from observational studies of hospitalized patients, not from planned experiments. Data ...
I examined the relationship between daily deaths and airborne particles in 10 U.S. cities with varying climatic conditions and seasons in which particle concentrations were high. Airborne particles ...
The U.S. Clean Air Act requires the U.S. Environmental Protection Agency (EPA) to carry out periodic reviews of the National Ambient Air Quality Standards (NAAQS) for major “criteria” air pollutants ...
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