%0 Journal Article %T Use of self-reported vaccination status can bias vaccine effectiveness estimates from test-negative studies %A Michael L. Jackson %J Archive of "Vaccine: X". %D 2019 %R 10.1016/j.jvacx.2018.100003 %K Influenza %K Human %K Methodology %K Bias (epidemiology) %K Vaccine effectiveness %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6668222/