Kiefer, S., Kling, K., Stephan, R., Bratschi, M. . W., Jost, M., Bless, P. . J., Schmutz, C., Mäusezahl, D., Wyss, K., Mäusezahl-Feuz, M. and Hatz, C. (2016) “How can patients and their physicians contribute to an outbreak investigation? Experiences from a nationwide listeriosis outbreak in Switzerland”, Swiss Medical Weekly, 146(4546), p. w14366. doi: 10.4414/smw.2016.14366.