@article{:/content/10.2807/esm.04.05.00073-pt, author = "Fisher, I. S.T.", title = "", journal = "", year = "", volume = "", number = "", eid = , pages = "", url = "https://www.eurosurveillance.org/content/10.2807/esm.04.05.00073-pt", doi = "https://doi.org/" }