The potential value of crowdsourced surveillance systems in supplementing sentinel influenza networks: the case of France Guerrisi, Caroline and Turbelin, Clément and Souty, Cécile and Poletto, Chiara and Blanchon, Thierry and Hanslik, Thomas and Bonmarin, Isabelle and Levy-Bruhl, Daniel and Colizza, Vittoria, Eurosurveillance, 23, 1700337 (2018), https://doi.org/10.2807/1560-7917.ES.2018.23.25.1700337