Synergistic Activity of Colistin-Containing Combinations against Colistin-Resistant Enterobacteriaceae. Brennan-Krohn T, Pironti A, Kirby JE. Synergistic Activity of Colistin-Containing Combinations against Colistin-Resistant Enterobacteriaceae. Antimicrob Agents Chemother. 2018;62(10). doi:10.1128/AAC.00873-18DOIPubMedGoogle Scholar Read more