[1] Vrije Univ Amsterdam Med Ctr, EMGO Inst, Dept Nursing Home Med, NL-1081 BT Amsterdam, Netherlands
[2] Vrije Univ Amsterdam Med Ctr, Dept Publ & Occupat Hlth, NL-1081 BT Amsterdam, Netherlands
[3] Vrije Univ Brussels, End Life Care Res Grp, Brussels, Belgium
[4] Charles Univ Prague, Sch Med, Prague, Czech Republic
[5] Univ S Florida, Sch Aging Studies, Tampa, FL USA