QFLU: new influenza monitoring in UK primary care to support pandemic influenza planning
Hippisley-Cox, J and Smith, S and Smith, G E and Porter, A and Heaps, M and Holland, R and Fenty, J and Harcourt, S and George, R and Charlett, A and Pebody, R G and Painter, M, Weekly releases (1997–2007), 11, 2980 (2006), https://doi.org/10.2807/esw.11.25.02980-en