of;
Environmental;
Design;
for;
the;
Elderly,;
Research;
Center;
Design;
&;
Health,;
Stockholm;
16966,;
Sweden;
of;
Gerontology,;
Simon;
Fraser;
University,;
Vancouver;
BC;
V6B;
5K3,;
Canada;
Life-Tech;
Research;
Center,;
Yonsei;
University,;
Seoul;
120-749,;
Korea;