2.9. Antimicrobial Susceptibility Tests

We determined minimum inhibitory concentrations (MICs) of colistin, polymyxin B, tigecycline, ampicillin, amoxicillin-clavulanate, cefotaxime, ceftazdime, cefepime, gentamicin, amikacin, ertapenem, imipenem, meropenem, fosfomycin, nitrofurantoin and ciprofloxacin for all isolates using the agar dilution method in accordance with the Clinical and Laboratory Standards Institute guidelines, and we interpreted the results according to the breakpoints of the European Committee on Antimicrobial Susceptibility Testing (EUCAST, 2016) for colistin, polymyxin B, and tigecycline and those of the Clinical and Laboratory Standards Institute (CLSI, 2016) for other antimicrobials (Table S2).