Maja Weisser*, Evelien A Oostdijk, Rob JL Willems, Marc JM Bonten, Reno Frei, Luigia Elzi, Jörg Halter, Andreas F Widmer and Janetta Top
* Corresponding author: Maja Weisser Weisserm@uhbs.ch
BMC Infectious Diseases 2012, 12:68 doi:10.1186/1471-2334-12-68