Erroneous Cohort Totals in Abstract

In the Original Investigation titled, “Association Between Birth Defects and Cancer Risk Among Children and Adolescents in a Population-Based Assessment of 10 Million Live Births,”¹ erroneous cohort totals for children without any birth defects, children with chromosomal anomalies, and children with nonchromosomal birth defects were added late in the editorial process and included on initial publication. These have been deleted, and correct population information is available in Table 1. Typographical errors in the Results section of the Abstract and the Methods section of the article body have also been fixed. This article¹ was corrected online.