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Selection of the study population. This study enrolled 427 patients. We excluded those patients with a creatinine value >2; those who died in-hospital; those for whom the BNP, LVEF, or clinical outcome value (i.e., mortality) was not available; and those for whom the BNP value was measured after more than 3 months. Finally, we analyzed 240 patients, including 153 (63.8%) with alive and 87 (36.3%) with death
