http://erj.ersjournals.com/content/early/2012/02/22/09031936.00195711.long Cyclists spend more time commuting, in their 2 compared populations, and are exposed to more BC.
http://erj.ersjournals.com/content/early/2012/02/22/09031936.00195711.long
Cyclists spend more time commuting, in their 2 compared populations, and are exposed to more BC.
I may have missed something, but is there any distinction between car-driving 'non-cyclists' and 'non-cyclists' who use public transport?
@Oliver Schick started
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I may have missed something, but is there any distinction between car-driving 'non-cyclists' and 'non-cyclists' who use public transport?