(HealthDay)—The leading cause of death varies with income in the United States, with heart disease still the leading cause of death in low-income counties, according to a study published online Nov. 13 in the Annals of Internal Medicine. Using U.S. death records from 2003 to 2015, Katherine G. Hastings, M.P.H., from the Stanford University School of Medicine in California, and […]

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