[1] Vrije Univ Amsterdam, Dept Publ & Occupat Hlth, Amsterdam Publ Hlth Res Inst, Amsterdam, Netherlands
[2] Vrije Univ Amsterdam, Amsterdam UMC, Amsterdam Publ Hlth Res Inst, Dept Gen Practice & Elderly Care Med, Amsterdam, Netherlands
[3] Vrije Univ Brussel, VUB UGhent End Of Life Care Res Grp, Dept Family Med & Chron Care, Brussels, Belgium
[4] Ghent Univ Hosp, VUB UGhent End Of Life Care Res Grp, Dept Geriatr Med, Ghent, Belgium
[5] Univ Edinburgh, Edinburgh, Midlothian, Scotland
[6] Univ Lancaster, Int Observ End Of Life Care, Lancaster, England
[7] Jagiellonian Univ Med Coll, Fac Med, Epidemiol & Prevent Med Chair, Unit Res Ageing Soc, Krakow, Poland
[8] Natl Inst Hlth & Welf, Helsinki, Finland
[9] Univ Cattolica Sacro Cuore, Dept Internal Med & Geriatr, Rome, Italy
[10] Univ Geneva, Ctr Interdisciplinary Study Gerontol & Vulneabil, Geneva, Switzerland
[11] HES SO Univ Appl Sci & Arts Western Switzerland, HE Arc Sante, Neuchatel, Switzerland
[12] Radboud Univ Nijmegen, Med Ctr, Dept Anesthesiol Pain & Palliat Med, Nijmegen, Netherlands
[13] Univ Ghent, VUB UGhent End Of Life Care Res Grp, Dept Publ Helath & Primary Care, Ghent, Belgium