The use of cefepime as a carbapenem-sparing antibiotic for treating uncomplicated acute pyelonephritis caused by extended-spectrum β-lactamase producing Escherichia coli. Issue 3 (4th March 2018) - Suh, Jin Woong; Yang, Kyung Sook; Kim, Sun Bean; Kim, Jong Hun; Sohn, Jang Wook; Kim, Min Ja; Yoon, Young Kyung