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Fritzsche, M.; Ammann, R.A.; Droz, Sara Christine; Bianchetti, M.G.; Aebi, Christoph (2005). Changes in antimicrobial resistance of Escherichia coli causing urinary tract infections in hospitalized children. European journal of clinical microbiology & infectious diseases, 24(3), pp. 233-235. Springer 10.1007/s10096-005-1301-2
