@article{:/content/10.2807/esm.07.01.00352-es, author = "Alvseike, O and Leegaard, T and Aavitsland, P and Lassen, J", title = "", journal = "", year = "", volume = "", number = "", eid = , pages = "", url = "https://www.eurosurveillance.org/content/10.2807/esm.07.01.00352-es", doi = "https://doi.org/" }