[1] Vrije Univ Amsterdam, Med Ctr, Dept Internal Med, Sect Gerontol & Geriatr, Amsterdam, Netherlands
[2] Amstelland Hosp, Dept Internal Med, Amstelveen, Netherlands
[3] McRoberts, The Hague, Netherlands
[4] Vrije Univ Amsterdam, Dept Human Movement Sci, MOVE Res Inst Amsterdam, Amsterdam, Netherlands
[5] Vrije Univ Amsterdam, Med Ctr, Dept Rehabil Med, Amsterdam, Netherlands
[6] Univ Melbourne, Royal Melbourne Hosp, Dept Med & Aged Care, Melbourne, Vic, Australia