[1] IRCCS Osped Policlin San Martino, Cardiovasc Dis Unit, Viale Benedetto 15,6, I-16132 Genoa, Italy
[2] Univ Genoa, IRCCS Italian Cardiovasc Network, Genoa, Italy
[3] Univ Genoa, Dept Internal Med, Viale Benedetto 15,6, I-16132 Genoa, Italy
[4] Univ Hosp, Dept Med 1, Cardiol, Wurzburg, Germany
[5] Univ Hosp, Comprehens Heart Failure Ctr, Wurzburg, Germany
[6] Univ Wurzburg, Wurzburg, Germany