Epidemiology High burden of extended-spectrum β-lactamase-positive Escherichia coli in geriatric patients Pak-Leung Ho, Pui-Hing Chau, Mei-Kum Yan, Kin-Hung Chow, Jonathan H. K. Chen, Sally C. Y. Wong, Vincent C. C. Cheng p. 878–883 https://doi.org/10.1099/jmm.0.068270-0