@article{:/content/10.2807/esm.04.06.00056-fr, author = "Pönka, A and Maunula, L and von Bonsdorff, C. H. and Lyytikaïnen, O", title = "", journal = "", year = "", volume = "", number = "", eid = , pages = "", url = "https://www.eurosurveillance.org/content/10.2807/esm.04.06.00056-fr", doi = "https://doi.org/" }