PLoS Medicine
http://www.plosmedicine.org/
(Accessed 2 Nov 2019)

Early signal detection of adverse events following influenza vaccination using proportional reporting ratio, Victoria, Australia
Hazel J. Clothier, Jock Lawrie, Melissa A. Russell, Heath Kelly, Jim P. Buttery

Research Article | published 01 Nov 2019 PLOS ONE
https://doi.org/10.1371/journal.pone.0224702