Research
Using physician billing claims from the Ontario Health Insurance Plan to determine individual influenza vaccination status: an updated validation study
Kevin L. Schwartz, Nathaniel Jembere, Michael A. Campitelli, Sarah A. Buchan, Hannah Chung and Jeffrey C. Kwong
August 25, 2016 4 (3) E463-E470; DOI: https://doi.org/10.9778/cmajo.20160009