Influenza Vaccination Rates, Feedback, and the Hawthorne Effect

Philip M. Polgreen, Jean Pottinger, Linnea A. Polgreen, Daniel J. Diekema, Loreen A. Herwaldt
2006 Infection control and hospital epidemiology  
doi:10.1086/499393 pmid:16528865 fatcat:5ul52l2ffzcnjpy7eczfaa7sqq