Response to Rissel and Wen: 'the possible effect on frequency of cycling if mandatory bicycle helmet legislation was repealed in Sydney, Australia: a cross sectional survey'.
Jake
J
Olivier
Tim
T
Churches
Scott
S
Walter
Andrew
A
McIntosh
Raphael
R
Grzebieta
D001642:Bicycling / Q000331:legislation & jurisprudence*; D005260:Female; D006260:Head Protective Devices; D006801:Humans; D007878:Legislation as Topic; D008297:Male