@article{ref1,
title="A longitudinal study of associations between the local road environment and physical activity among youth",
journal="Journal of science and medicine in sport",
year="2010",
author="Carver, A. and Timperio, A. and Hesketh, K. and Crawford, D.",
volume="12",
number="Suppl 2",
pages="e200-e200",
abstract="From the proceedings of the 2009 Australia Conference of Science and Medicine in Sport, Seventh National Physical Activity Conference, Sixth National Sports Injury Prevention Conference, Be Active '09<p />",
language="",
issn="1440-2440",
doi="10.1016/j.jsams.2009.10.417",
url="http://dx.doi.org/10.1016/j.jsams.2009.10.417"
}