PLoS Medicine
http://www.plosmedicine.org/
(Accessed 12 Feb 2022)

Information nudges for influenza vaccination: Evidence from a large-scale cluster-randomized controlled trial in Finland
Lauri Sääksvuori, Cornelia Betsch, Hanna Nohynek, Heini Salo, Jonas Sivelä, Robert Böhm
Research Article | published 09 Feb 2022 PLOS Medicine
https://doi.org/10.1371/journal.pmed.1003919