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Hilty M, Betsch BY, Bögli-Stuber K, Heiniger N, Stadler M, Küffer M, Kronenberg A, Rohrer C, Aebi S, Endimiani A, Droz S, Mühlemann K.Hilty M, et al. Among authors: betsch by.Clin Infect Dis. 2012 Oct;55(7):967-75. doi: 10.1093/cid/cis581. Epub 2012 Jun 20.Clin Infect Dis. 2012.PMID: 22718774Free PMC article.