Double-contrast barium enema is no longer justified as a backup examination for colonoscopy in the population screening program: Population study in an organized fecal immunochemical test-based screening program. - Hsu WF; Su CW; Hsu CY; Yen AM; Chen SL; Chiu SY; Lee YC; Hsu TH; Lin LJ; Chia SL; Wu MS; Chen HH; et al. (Journal of gastroenterology and hepatology, 2023)