In the Letter that appeared on page e21 of the May 2016 issue, there was an error in the following sentence. The correction appears in bold italics.
Given the substantially larger sample size, however, direct estimation from ultrasound screening data among 47,203 examinees in the unexposed or relatively low contaminated areas in Belarus would be more appropriate, where no cancer cases were detected (95% confidence interval: 0–78 per million examinees),16–19 as shown in eTable 1 of our article.9
Tsuda T, Tokinobu A, Yamamoto E, Suzuki E. The Authors Respond. Epidemiology 2016;27:e21–e23.