Two types of community epidemiological studies (involving measures of short-term and long-term exposures and response) have been used to estimate PM/ mortality relationships.
There have been multiple types of studies done on mortality relationships.
The relationship between PM and mortality has never been studied.
the three women went to the concert
Out magazine's editor is promoting isolation of gays from rest of the community.
Translational studies that develop methods of adapting already validated interventions into emergency department practice are needed.
Two motorcycles race down a buys street.
Nema ran into the room before Dave could ask what he was supposed to prevent.
A boy looks at a bug.