Can air pollution negate the health benefits of cycling and walking?

Marko Tainio, Audrey J De Nazelle, Thomas Götschi, Sonja Kahlmeier, David Rojas-Rueda, Mark J Nieuwenhuijsen, Thiago Hérick De Sá, Paul Kelly & James Woodcock
This data repository is not currently reporting usage information. For information on how your repository can submit usage information, please see our documentation.