@article{:/content/10.2807/esm.12.05.00706-fr, author = "Larrauri, A and De Mateo, S and Spanish Influenza Sentinel Surveillance System", title = "", journal = "", year = "", volume = "", number = "", eid = , pages = "", url = "https://www.eurosurveillance.org/content/10.2807/esm.12.05.00706-fr", doi = "https://doi.org/" }