Validation of a syndromic surveillance system using a general practitioner house calls network, Bordeaux, France Flamand, C and Larrieu, S and Couvy, F and Jouves, B and Josseran, L and Filleul, L, Eurosurveillance, 13, 18905 (2008), https://doi.org/10.2807/ese.13.25.18905-en