The study , while revealing , needs to be further explored , she said . Study finds unusually high occurrences of abnormal left and right ventricular functioning . Findings are first to possibly link work at Ground Zero to cardiovascular disease . Study was initially designed to understand sources of stress and effects of Ground Zero . Police officers in other cities could help put findings in context , study 's leader says .
Study finds unusually high occurrences of abnormal left and right ventricular functioning . Findings are first to possibly link work at Ground Zero to cardiovascular disease . Study was initially designed to understand sources of stress and effects of Ground Zero . Police officers in other cities could help put findings in context , study 's leader says .