title: Novel observational study designs with new influenza vaccines.
authors: Clinical Pharmacoepidemiology, University of Groningen, Groningen Research Institute of Pharmacy, Unit PharmacoEpidemiology and PharmacoEconomics, 9713 AV Groningen, Netherlands. Electronic address: e.hak@rug.nl.
authors: Eelko
authors: E
authors: Hak
mesh_terms: D005260:Female; D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage* / Q000276:immunology*; D007251:Influenza, Human / Q000517:prevention & control*; D008297:Male; D064887:Observational Studies as Topic
chemical_list: D007252:Influenza Vaccines