Pasvol, TJ;    Bloom, S;    Segal, AW;    Rait, G;    Horsfall, L;      (2021)    Use of contraceptives and risk of inflammatory bowel disease: A nested case–control study.                   Alimentary Pharmacology and Therapeutics        10.1111/apt.16647 <https://doi.org/10.1111/apt.16647>.    (In press).    Green open access