来源:BMC Public Health
作者:Charles C Branas;Frances K Barg;Kent DW Bream;等
关键词:Guatemala;Satellite imagery;...
来源:BMC Public Health
作者:Charles C Branas;Frances K Barg;Kent DW Bream;等
关键词:Guatemala;Satellite imagery;...
来源:BMC Public Health
作者:Frank H Pierik;Jamie MA Graham;Sanne I de Vries;等
关键词:Cycling;Walking;...
来源:BMC Public Health
作者:Frank H Pierik;Jamie MA Graham;Sanne I de Vries;等
关键词:Cycling;Walking;...
来源:BMC Public Health , 2020
作者:Behrang Assemi;Mark Hickman;Jonathan Corcoran;等
关键词:Physical activity (PA);Walking;...
使用许可:Unknown
来源:BMC Public Health , 2014
作者:Charles C Branas;Kent DW Bream;Frances K Barg;等
关键词:Geographic random sampling;Social surveys;...
使用许可:CC BY