In the April 2012 issue, the Journal published an Author Reply by Rissel and Wen in response to a letter by Olivier et al. on the impact of mandatory bicycle helmet legislation. It has come to the Journal?s attention that certain comments contained in the Author Reply may be interpreted as meaning that Olivier et al. disregard evidence relating to the public health benefits of cycling. Any inference that Olivier et al. disregard evidence relating to the public health benefits of cycling is withdrawn. The Journal regrets and unreservedly apologises for any hurt or embarrassment caused by reason of the publication of the comments.