Early estimates of 2009 pandemic influenza A(H1N1) virus activity in general practice in France: incidence of influenza-like illness and age distribution of reported cases
Turbelin, C and Pelat, C and Boëlle, P Y and Lévy-Bruhl, D and Carrat, F and Blanchon, T and Hanslik, T, Eurosurveillance, 14, 19341 (2009), https://doi.org/10.2807/ese.14.39.19341-en