Meanings of epidemiologic investigations in английском

Background: Several epidemiologic investigations have established a link between Helicobacter pylori infection and gastric malignancies.

Numerous epidemiologic investigations have identified links between high concentrations of arsenic in drinking water and cancer, although the risks at lower exposures are largely unknown.

Epidemiologic investigations often report dose-response associations, which may be combined in meta-analyses.

Epidemiologic investigations have shown that exercise reduces morbidity and mortality from coronary artery disease.