Correction to: Promotion of cycling and health

In this editorial by Nanette Mutrie and Fiona Crawford (BMJ 2010;341:c5405;doi:10.1136/bmj.c5405), the authors have alerted us to an error in the second sentence of the fifth paragraph. It should have read: “Of the 25 studies included in their quantitative synthesis, only seven [not ‘six’] met at least three of the five validity criteria and only one of these [not ‘and none of these’] was based in the United Kingdom, despite the fact that UK studies represented over half of those scrutinised.”