?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Pasvol&rft.aufirst=TJ&rft.au=Pasvol%2C+TJ&rft.title=Alimentary+Pharmacology+and+Therapeutics&rft.atitle=Use+of+contraceptives+and+risk+of+inflammatory+bowel+disease%3A+A+nested+case%E2%80%93control+study&rft.date=18+October+2021&rft.genre=article