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Compared to yearly screening, more frequent mammograms for women treated for early-stage breast cancer did not confer additional benefit, a study from Columbia University oncologists has found.

A mismatch between airway and lung size may explain why some nonsmokers get COPD and some heavy smokers do not, according to a new study from Columbia University.

Kidney complications were more common in New York City COVID-19 patients than in COVID-19 patients from other regions, a new single-center study from Columbia researchers has found.