?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Snow%2C+TAC&rft.aufirst=TAC&rft.aulast=Snow&rft.title=Intensive+Care+Medicine&rft.pages=641-652&rft.issue=6&rft.atitle=Tocilizumab+in+COVID-19%3A+a+meta-analysis%2C+trial+sequential+analysis%2C+and+meta-regression+of+randomized-controlled+trials&rft.volume=47&rft.date=June+2021&rft.genre=article