[1] Vrije Univ Amsterdam Med Ctr, EMGO Inst, Inst Res Extramural Med, NL-1081 BT Amsterdam, Netherlands
[2] Vrije Univ Amsterdam Med Ctr, Dept Gen Practice, NL-1081 BT Amsterdam, Netherlands
[3] Vrije Univ Amsterdam Med Ctr, Dept Rehabil Med, NL-1081 BT Amsterdam, Netherlands