| http://www.w3.org/ns/prov#value | - Hypothesis Comorbid conditions are associated with the risk of death from coronary artery bypass graft surgery.Design Prospective cohort study data were collected on patient and disease characteristics and comorbid conditions including hypertension, diabetes, obesity, vascular disease, chronic obstructive pulmonary disease, cancer (excluding nonmelanoma skin cancer), dialysis-dependent renal failu
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