[1] Vrije Univ Brussel VUB, Dept Family Med & Chron Care, End Of Life Care Res Grp, Laarbeeklaan 103, B-1090 Brussels, Belgium
[2] Univ Ghent, Laarbeeklaan 103, B-1090 Brussels, Belgium
[3] Univ Ghent, Dept Geriatr Med, De Pintelaan 185, B-9000 Ghent, Belgium
[4] Vrije Univ Amsterdam Med Ctr, Dept Publ & Occupat Hlth, EMGO Inst Hlth & Care Res, Expertise Ctr Palliat Care, Boechorstr 7, NL-1081 BT Amsterdam, Netherlands
[5] Univ Lancaster, Fac Hlth & Med, 46 Bardsea, Lancaster LA14YX, England
[6] Jagiellonian Univ, Dept Med Sociol, Chair Epidemiol & Prevent Med, Fac Med, Ul Kopernika 7a, PL-31034 Krakow, Poland
[7] Univ Cattolica Sacro Cuore, Dept Internal Med, Ist Med Interna Geriatria E, Largo F Vito 1, I-00135 Rome, Italy
[8] Natl Inst Hlth & Welf, Mannerheimintie 166,POB 30, Helsinki 00271, Finland