?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Charlotte&rft.aulast=Bermingham&rft.au=Bermingham%2C+Charlotte&rft.volume=97&rft.issue=4&rft.atitle=Estimating+the+effectiveness+of+first+dose+of+COVID-19+vaccine+against+mortality+in+England%3A+a+quasi-experimental+study&rft.title=American+Journal+of+Epidemiology&rft.date=April+2022&rft.pages=470-480&rft.genre=article