Reversing declines in walking and bicycling to school.
Wendel
Arthur M
AM
Centers for Disease Control and Prevention, National Center for Environmental Health, 4770 Buford Highway, Atlanta, GA 30341, USA. dvq@cdc.gov
Dannenberg
Andrew L
AL
D001642:Bicycling; D002170:Canada; D002958:City Planning; D006293:Health Promotion; D006801:Humans; D009043:Motor Activity; D009864:Ontario; D012449:Safety; D012574:Schools; D013334:Students; D014186:Transportation / Q000706:statistics & numerical data*; D016138:Walking