@article{:/content/10.2807/esm.02.10.00149-es, author = "O’Brien, S. J. and Smart, L. E.", title = "", journal = "", year = "", volume = "", number = "", eid = , pages = "", url = "https://www.eurosurveillance.org/content/10.2807/esm.02.10.00149-es", doi = "https://doi.org/" }