Clustering of common risk factors does not explain risk of CHD

We inadvertently omitted some vital words from the title of the summary paragraph in This Week in the BMJ for the paper by Shah Ebrahim and colleagues (“Clustering of risk factors and social class in childhood and adulthood in British women's heart and health study: cross sectional analysis,” 10 April, pp 861-4). The summary should have been titled: “Clustering of common risk factors does not explain social inequalities in the risk of CHD.”