[1] IRCCS AOU San Martino IST, Reg Palliat Care Network, I-16132 Genoa, Italy
[2] Mario Negri Sud Consortium, Mario Negri Sud Inst, Chieti, Italy
[3] IRCCS Casa Sollievo Sofferenza, Biostat Unit, San Giovanni Rotondo, Italy
[4] ASL 3 Genovese, Villa Scassi Hosp, Unit Resp Dis, Genoa, Italy
[5] ASL 3 Genovese, Villa Scassi Hosp, Unit Internal Med, Genoa, Italy
[6] ASL 3 Genovese, Home Care Palliat Care Unit, Genoa, Italy
[7] Kings Coll London, Cicely Saunders Inst, Dept Palliat Care Policy & Rehabil, London WC2R 2LS, England