“@chris_stevenson “@BoingBoing Bike helmets and safety: a case study in difficult epidemiology http://dlvr.it/4WLbrv ”” /cc @calpaterson
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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@BoingBoing Regardless, I wear a helmet whenever I cycle. And will continue to do so.Thanks. Twitter will use this to make your timeline better. UndoUndo
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“
@BoingBoing: Bike helmets and safety: a case study in difficult epidemiology http://dlvr.it/4WLbrv ” making them compulsorily is a bad ideaThanks. Twitter will use this to make your timeline better. UndoUndo
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