Correction to: European Journal of Human Genetics advance online publication, 18 March 2015; doi:10.1038/ejhg.2015.57
An error was made when presenting results of the CARE study by Bianchi et al.
The sentence: ‘They found a sensitivity of 100% (for all three trisomies) (95% confidence interval (CI): 99.8–100), at a specificity of 99.7 and 99.8% for trisomies 21 and 18, respectively' should have read: ‘While detecting all eight cases of the three trisomies, this study found a specificity of 99.7 for trisomy 21 (95% CI: 99.3–99.9) and 99.8 for trisomy 18 (95% CI: 99.6–100).
The authors would like to apologise for their error.