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. 2021 Dec 23;20(6):e1263–e1282. doi: 10.1016/j.cgh.2021.12.026

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Included patients from the epi-IIRN cohort. ¹Non-IBD controls were matched by age, sex, HMO, and jurisdiction of residence. ²Included individuals were vaccinated with 2 doses of Pfizer-BioNTech BNT126b2 from December 2020 to June 2021.