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Clinical features, management in the emergency department and mortality of acute heart failure episodes in patients with chronic obstructive pulmonary disease N. Ivars, Pere Llorens, A. Alquézar, J. Jacob, B. Rodríguez, M. Guzmán, L. Serrano Lázaro, M.C. Martínez Picón, L. Cuevas Jiménez, Ò. Miró