?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Narayanan&rft.aufirst=Martina&rft.au=Narayanan%2C+Martina&rft.title=European+Journal+of+Epidemiology&rft.atitle=How+to+mitigate+selection+bias+in+COVID-19+surveys%3A+evidence+from+five+national+cohorts&rft.pages=1221-1227&rft.issn=0393-2990&rft.date=November+2024&rft.volume=39&rft.genre=article