[1] Insubria Univ, Dept Clin Med, I-21100 Varese, Italy
[2] ASO S Croce E Carle, Dept Clin Med, Cuneo, Italy
[3] Presidio Ospedaliero Unico Levante Ligure, Dept Internal Med, La Spezia, Italy
[4] AO Osped Civile, Dept Internal Med, Legnano, Italy
[5] AO Careggi, Dept Internal Med, Florence, Italy
[6] Osped Buon Consiglio, Dept Internal Med, Naples, Italy
[7] Univ Perugia, Internal & Cardiovasc Med & Stroke Unit, I-06100 Perugia, Italy
[8] AOU Maggiore Carita, Dept Internal Med, Novara, Italy