Correction to: Crohn's disease-specific mortality: a 30-year cohort study at a tertiary referral center in Japan.

The second sentence in the second paragraph under the heading "SMRs" on page 46 should be "SMRs were especially high for small intestinal cancer at 200 (95% CI 34.6-806.7), CRC at 29.7 (95% CI 16.5-53.7), and brain tumor at 12.5 (95% CI 1.8-88.7)". The fourth sentence in the second paragraph under the "SMRs" on page 46-47 should be "However, high SMRs were not observed for many conditions, such as respiratory disease (1.4; 95% CI 0.4-5.7), cardiovascular disease (1.3; 95% CI 0.4-3.9), suicide (1.2; 95% CI 0.4-3.6), and traffic injuries (0.7; 95% CI 0.1-5.1)". [Extracted from the article]