title: Influenza vaccine effectiveness using the test-negative design: comparability and methodological challenges in meta-analyses.
authors.affiliation: Victorian Infectious Diseases Reference Laboratory, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia. Electronic address: james.fielding@vidrl.org.au.
authors.forename: James E
authors.initials: JE
authors.lastname: Fielding
mesh_terms: D016022:Case-Control Studies; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human; D014611:Vaccination
chemical_list: D007252:Influenza Vaccines