[1] Netherlands Inst Hlth Serv Res, NIVEL, Utrecht, Netherlands
[2] Prismant, Utrecht, Netherlands
[3] Vrije Univ Amsterdam, Med Ctr, Dept Nursing Home Med, Amsterdam, Netherlands
[4] Univ Kent, Ctr Hlth Serv Studies, Canterbury, Kent, England
[5] E Kent Hosp, Canterbury, Kent, England
[6] CHESS, STAKES, Helsinki, Finland
[7] Charles Univ Prague, Fac Med 1, Dept Geriatr, Prague, Czech Republic
[8] Inst Postgrad Med Educ, Prague, Czech Republic
[9] Inst Gesundheitsanalysen & Soziale Konzepte, Berlin, Germany
[10] St Perine Hosp, Ctr Gerontol, Paris, France
[11] Univ Versailles, F-78000 Versailles, France
[12] Univ Iceland, Univ Hosp, Landspitali, Sch Med,Dept Geriatr, Reykjavik, Iceland
[13] Diakonhjemmet Univ Coll, Oslo, Norway
[14] Karolinska Inst, Stockholm, Sweden
[15] Bispebjerg Hosp, DK-2400 Copenhagen, Denmark
[16] Univ Cattolica Sacro Cuore, Fac Med & Surg, I-00168 Rome, Italy